If there is any chance on renting a car, I would urge it. There are TONS of things to do on I-Drive at night.
Other than that, let me think...
I like the movie idea; it's a great theater!
They could walk around and visit some of the shops at CityWalk, not sure how much they'll enjoy this though. I would, but I'm not really a teenager anymore (sometimes I wish I was though, haha).
When are you going? There may be an event going on while you're there that you can all attend.
There may be some things to do at the hotel. The pool area usually has a lot of activity and things going on. The Luau at RPR is at night, but I'm not sure how a 17 and 18 year old would feel about it (might get bored, I dunno).
What do your teens like to do? What are they into?
Do they like wrestling? If so I would recommend going to a TNA taping (
www.tnawrestling.com) if they have one scheduled during your stay. They usually film it on a Monday or Tuesday night, and then it gets shown that week (and sometimes the next week if they tape two shows) on Spike TV. They sometimes have live PPV shows there too on Sundays. It will last into the night and it's lots of fun (or, it will be if they like wrestling). My wife and I go down there a few times a year, spend the day at Universal/IOA, and then go to the tapings at night. You have to be there kinda early though, so it might cut into your plans for park activities (and it might suck to stand in line for an hour or more, watching everyone going on rides). Still, they usually last longer than the parks are open, so it would give you something to do at night. It's free to get in.
Can you tell us more about your teens and when you're going? Maybe if we know more info we can think of better ideas.
