Governors of states go on trade missions to other countries frequently.
Do they always do it while their legislatures are in session, or while a portion of their state is undergoing an emergency (i.e. flooding and gas shortages in South Florida)? Besides which, such trade missions usually last one or two days. How long has DeSantis been on this multi-nation tour, and how quickly did it follow his book tour?
“Do they always do it while their legislatures are in session, or while a portion of their state is undergoing an emergency (i.e. flooding and gas shortages in South Florida)?”
They often go on these types of trips while the legislature is in session, since they are not part of the legislature. The job of the governor is to sign or veto the legislation once passed, and if any lobbying is necessary, that can be usually be done via phone, video chat, etc. And since Desanti has a GOP supermajority in the legislature, not much lobbying should be necessary.
As far as the flooding and shortages, any competent governor should be able to monitor the response from anywhere. The governor is not going to be driving gas trucks or utility trucks. This is just a red herring, trying to find something to complain about to tear Desantis down.
Another thing to consider is that these types of trips are usually planned weeks or months in advance. Unless the situation in Ft. Lauderdale required his personal appearance on-site, as long as the wheels of the government response are turning, there is no reason to cancel the trip.