Where should i vacation at?

I am 15years old and my family wanna go on a vacation for like two or three days but are sick and tired of theme parks and camping was really bad for us. We want a place with like the weather here in miami nice and warm. and no foreign countries please i was thinkin a cruise but i don't know where to we went to the bahamas and mexico they were ok but after 3 days on the boat my brother got sea sick. We loved Daytona Beach but my mom wants a place where there is stuff to do so where should me, my brother, mom and dad go this summer.