Thankfully Ian went well south of Tampa since we stay the winter about 80-90 miles north of Tampa in Crystal River. In years past we've camped at Oscar Schere SP just north of Venice and Mayaka SP as well as Riverside RV Park along the Peace River toward Arcadia. Those parks are likely in rough shape at the present time.
I suspect that folks that left their RVs south of I-4 along the Gulf Coast may not have an RV anymore. If those RVs survived the storm they certainly don't have electric and may find a layer of mold on things.
We still have a couple of months left in hurricane season so things could still change in the near future. As Jimmy Buffett said; "You cannot reason with hurricane season."