I just got back from a quick trip to Destin. Signal was pretty lousy til I got past Sandestin, then 5 bars. Back home, roaming again.
A call to Sprint yielded no help so far. They say "no outages in your area" and "low number of dropped calls", and suggested I should take my phone in to be looked at. Uh, no, that's a trip to Mary Esther, and besides, it worked just fine in Destin.
She did "flag the area" for the techs to investigate. Hope they find it soon.