My husband and I would like to take our 11 y.o. dtr and 15 y.o. son to the Dells for a 3 day mini-vacation. What do you recommend as far as place to stay? We would like to be somewhere where water park admission is included in room price if possible. Not wanting to spend more than $800 for the 3 days (aside from food) as we are spending a week in California in August. Any comments will help!