Hi RumpleMom,
Your family will love HH. After 7 trips, I still can't wait for the next vacation. I'll try to answer some of your questions but the best source of info on HH is Tom Towery's web page.
http://ttowery.tripod.com/
I, personally, love the Beach House. Very clean, nice pool, good quality lunch and snack food, bar for the adults if you like a little treat and a great view of the beach.
Underground parking if you arrive early keeps the car a little clearer and out of the heat. Air condition activity room with large screen TV if you need to get out of the sun, gaming tables, chairs for relaxing and a fire place for colder months. An arcade room with some games for those who like to test their skills. Towels are provided for the pools and beach.
It is a very short walk to the beach. Restroom access from the beach is available above the underground parking from the side entrance of the beach house. Beach chairs are for rent on the beach but it makes more sense to buy them even if you leave them behind. Beach umbrellas are also rented on the beach. Rentals are very pricey around $45 for the week or more.
The water is great but might seem a little tame for teenagers. The last time we were there some dolphin pods swimming a few feet from us. Great to watch.
Bicycles are for rent for about $20 per week including helmet and chain lock. These are beach bikes with no gears - fine for a place as flat as Hilton Head. You can bring your bikes but you should know the salt air is very corrosive and if you ride on the beach your bike will age quickly. Disney Resort allows to to store the bikes on your
porch area or in the under ground parking area at the Lodge.
In case of rain, there is tons of shopping areas, movie complex, craft activities, fishing and crabbing off the pier if the weather not to bad. There is free video rentals, museums, arcardes and the fitness center. I'm sure you'll find plenty to do.
Some of the things to do are:
Kayaking
Parasailing
Horseback riding
Dolphin watching & eco tours
Fishing
Boating
Wave running
Miniature golf
Crabbing
Bike riding
Rollerblading
Sailing
Historic side trips
Enjoying nature - alligators, deer, birds
Water slide
Family fun center
Driving ranges
Batting cages
Have a great trip.
Sandy B.