We have spent considerable time on PI's and MB and lived 12 years on the beach in Florida (e.g.Jensen Beach). The first thing I think they should consider is the threat of hurricanes for a few months. That does not go away and if it hits you are in for a bad couple of years rebuilding. The second when it comes to PI and MB although they are fine in the Spring and Fall, somewhat warm in the summer but in the winter months you get about 2-4 good days
and the other's are chilly and can be rainy. The net is it is very risky to buy on the coast as you are putting yourself in harms way. The beach (e.g. Jensen Beach) is great in Florida which is generally all beaches in Fla but they are very open to Hurricanes and bad storms. Thus, The Villages which is best choice if someone wants warm temp winter and summer, pretty much safe from the main damages from hurricanes and God forbid much to do. Good Luck in the search for a good place to settle.
