Lucky4LeafClover,
Welcome Back to BetterBidding!
In the future please YOUR THREADS with whatever you decide to do for your trip (even if you don't end up using PRICELINE / HOTWIRE, cancel the trip, book a regular rate hotel, etc) as this helps keep the board better organized and more useful for everyone, as well as being a courtesy to anyone who took the time to help with your travel plans.
As for your question above, sometimes HOTWIRE hotels (and PRICELINE EXPRESS too) will show a Bed Choice option which allows you choose the specific room class or configuration. If this is not shown, then the room is booked 'Run of House' meaning that it will be assigned at check-in based upon what is available; generally speaking you should expect a 'standard' room... upgrades can, and do, happen but it's not something that you should count on.
Is the Animal Kingdom even showing thru HOTWIRE for your own dates of travel? If you need help with an upcoming trip please start a NEW TOPIC and include the details of your trip (dates, budget, acceptable zones, desired star rating, etc, etc) along with any hotel offers you want us to research.
Please remember to return to BetterBidding and use the PRICELINE and HOTWIRE links on the board to begin your travel purchases... or thru our sister site MAPSandHOTELS.com for your regular rate purchases.