The 'rule' for serving a summons in Florida is:
"Rule 1.070. Process
(a) Summons; Issuance. Upon the commencement of the action, summons or other process authorized by law shall be issued forthwith by the clerk or judge under the clerk's or the judge's signature and the seal of the court and delivered for service without praecipe. (b) Service; By Whom Made. Service of process may be made by an officer authorized by law to serve process, but the court may appoint any competent person not interested in the action to serve the process. When so appointed, the person serving process shall make proof of service by affidavit promptly and in any event within the time during which the person served must respond to the process. Failure to make proof of service shall not affect the validity of the service. When any process is returned not executed or returned improperly executed for any defendant the party causing its issuance shall be entitled to such additional process against the unserved party as is required to effect service.
(c) Service; Numerous Defendants. If there is more than 1 defendant, the clerk or judge shall issue as many writs of process against the several defendants as may be directed by the plaintiff or the plaintiff's attorney. (d) Service by Publication. Service of process by publication may be made as provided by statute.
(e) Copies of Initial Pleading for Persons Served. At the time of personal service of process a copy of the initial pleading shall be delivered to the party upon whom service is made. The date and hour of service shall be endorsed on the original process and all copies of it by the person making the service. The party seeking to effect personal service shall furnish the person making service with the necessary copies. When the service is made by publication, copies of the initial pleadings shall be furnished to the clerk and mailed by the clerk with the notice of action to all parties whose addresses are stated in the initial pleading or sworn statement. (f) Service of Orders. If personal service of a court order is to be made, the original order shall be filed with the clerk, who shall certify or verify a copy of it without charge. The person making service shall use the certified copy instead of the original order in the same manner as original process in making service.
(g) Fees; Service of Pleadings. The statutory compensation for making service shall not be increased by the simultaneous delivery or mailing of the copy of the initial pleading in conformity with this rule.
(h) Pleading Basis. When service of process is to be made under statutes authorizing service on nonresidents of Florida, it is sufficient to plead the basis for service in the language of the statute without pleading the facts supporting service.
(i) Service of Process by Mail. A defendant may accept service of process by mail.
(1) Acceptance of service of a complaint by mail does not thereby waive any objection to the venue or to the jurisdiction of the court over the person of the defendant.
(2) (A) A plaintiff may notify any defendant of the commencement of the action and request that the defendant waive service of a summons. The notice and request shall:
(B) be dispatched by certified mail, return receipt requested;
(C) be accompanied by a copy of the complaint and shall identify the court in which it has been filed;
(D) inform the defendant of the consequences of compliance and of failure to comply with the request;
(E) state the date on which the request is sent;
(F) allow the defendant 2 days from the date on which the request is received to return the waiver, or, if the address of the defendant is outside of the United States, 30 days from the date on which it is received to return the waiver; and
(G) provide the defendant with an extra copy of the notice and request, including the waiver, as well as a prepaid means of compliance in writing. (3) If a defendant fails to comply with a request for waiver within the time provided herein, the court shall impose the costs subsequently incurred in effecting service on the defendant unless good cause for the failure is shown.
(4) A defendant who, before being served with process, timely returns waiver so requested is not required to respond to the complaint until 60 days after the date the defendant received the request for waiver of service. For purposes of computing any time prescribed or allowed by these rules, service of process shall be deemed effected 20 days before the time required to respond to the complaint.
(5) When the plaintiff files a waiver of service with the court, the action shall proceed, except as provided in subdivision (4) above, as if a summons and complaint had been served at the time of filing the waiver, and no further proof of service shall be required."
"48.194 Personal service outside state. (1) Except as otherwise provided herein, service of process on persons outside of this state shall be made in the same manner as service within this state by any officer authorized to serve process in the state where the person is served. No order of court is required. An affidavit of the officer shall be filed, stating the time, manner, and place of service. The court may consider the affidavit, or any other competent evidence, in determining whether service has been properly made. Service of process on persons outside the United States may be required to conform to the provisions of the Hague Convention on the Service Abroad of Judicial and Extrajudicial Documents in Civil or Commercial Matters."