C.S.
Golden nugget has a shark tank pool. The pool & slide appear that you are actually swimming side by side with the Sharks. Google it and take a look.
As for where to eat, yes many of the buffets are now expensive. You will just have too look online or call for prices. You may find better meal prices off the strip or if you are not looking for specific food, there are plenty of TGIF's, Denny's, I think Applebee's and other commercial restaraunts on the strip. If you stay downtown as opposed to the strip, you can find plenty of restaraunts in the area that are not buffets. Downtown is older but you can ask them when they last renovated, as many of them have.