I live in a small town and its growing. I want to start a buisness..Its 2 miles to So Parde ISLAND TX?

Its a popular place for winter Texans and spring break. We are over run by BANKS and RESTURANTS. NOV till April people are everywhere. Spanish Holidays people come from Mexico and neighboring towns Kids and Family alike.. When the summer comes and all the winter Texans have gone home.. Its the kids and family that come to the beach.. And we have plenty of novelty stores.. I looked into a bowling alley BUT that's over a $1,000,000,000 .We retired early. We want some ideas that would suit all..We already have a waterpark and a movie house..