re: Where to watch LSU/Saints games in South Walton/30A area?

Local here. My recommendation is The Hub, which is a new-ish place that's part of Prominence, just east of the main entrance to Watersound. It's set up kind of like an outdoor food court with a big (artificial) grass area in the middle, so if you've got kids they can go run around and stay out of the way where you can still keep an eye on them. Big projection screens for the ballgames. Bear in mind that you most likely won't be able to hear the game, so if that's important I'd pick somewhere else.

Other than that, the suggestions others have made are good too--Acme Ice House in Seacrest is owned by a colleague's husband, and they have delicious cheese grits, but like most everything on 30A it can be pricey. If you're looking to be a little less yuppie-fied than the Seaside/Rosemary crowd, I recommend McTighe's or Local Catch, both in Blue Mountain Beach.