The Kitchen is pretty good in the evening as well. Loads of places at City Walk,(5 mins walk from hotel) depending on your taste. Hard Rock Cafe, Forrest Gumps and Bob Marleys are all good IMO.
Walk up to the Portofino one day for a nose round and maybe dinner at Mamma Dellas or, if you're VERY flush, Bice.
Another fun thing at HRH, usually on the weekend is to have a casual dinner at the pool bar and then watch the 'dive--in' movie from the pool loungers.