For starters, if the Hilton property is what I think it is, you will LOVE it!!
We stayed in a 2 br villa through Hilton Grand Vacation Club which was minutes from Sea World and US/IOA. We didn't get to enjoy the resort all that much as we were a tad commando with planning and also went during the 1st week of December.
For your stay, expect heat and large crowds. Lines for the major attractions (Hulk et al) will figure to be long. By all means, you should take advantage of their Fast Pass (that's not the name but I can't think of it for the moment). This will at least allow you to plan a little head so as not to miss the big stuff.
The rides are intense and the shows are also amazing and of course, you get to see their newest section, Wizarding World of Harry Potter (many threads on this board).
Parking will be a bit daunting but so long as you remember the name of the section your'e in, you'll be fine (several people movers in the US garages). When there, you will be dumped into City Walk which is vast and chock full of whatever suits your fancy from food to souvenirs to beyond and is nestled in between US and IOA.
My personal food vote would be for Emeril's but that's just one of many (Bubba Gump Shrimp Co is another). As you are about 30 days out now, a reservation or 2 is highly recommended. Another great place us called Mythos in IOA. Argueably one of the best theme park restaurants that I have eaten at and have done so a few times now.
Have only visited Sea World once and seem to think that one day isn't enough these days.
Hope this helps and have a great time!!!