Me and a really good friend of mine are going to hang out. We have always been really close, and I want to date her when she moves down. She is down on vacation now and were going to have some drinks and stuff. What are some cool stuff we can do besides go in the pool and hot tub?

Watch a movie, have a picnic, play boardgames, go to the mall, go to the park... there are tons of things that you could do.

Good luck to you.

There are many things you can do that will strengthen your relationship with her. The first is to really get to know each other very well. Try and understand each other likes and dislikes. Visit interesting sites around the city. Discuss your future aspirations and goals and pray together about it.
All these will help the two of you. You become better friends when you understand one another. I wish you the best.