For $100 total-ABSOLUTELY!!
WL is a beautiful resort! And, deluxe for sure. It has Roaring Forks which is a large snack bar/food court type restaurant with various selections if you're not into sit down restaurants although WL's sit downs are good (WCC is a lot of fun, your non-sitting 4 & 11 yr olds may really enjoy it & they even get the opportunity to run around, AP is just plain excellent but $$$ & a little more adult oriented).
I've stayed at POR, as far as moderates are concerned it's nice, but IMHO I don't think it compares to any of the deluxes. I took my 4 yr old dd myself back in August and we stayed at WL and she loved it!
WL has so much to offer the kids too! Kids activities, FW (they have a great buffet that's VERY REASONABLE at Trail's End Buffeteria) which is just a boat ride away, a petting farm, bike rentals, water mice.... MK is also a boat ride away as josierac said. Check out the pictures!
You can even request bunk beds for the kids. The rooms are a bit smaller than POR but they have closets and balconies. I highly recommend it.