If liquor is of importance to you...then likely having a rental car is going to be one of your best bets so you can stop at a store. You can also take a towncar from the airport (at Last check about $60 one way +Tip) and they will often allow a quick gorcery store stop. Perhaps they would also allow a liquor store stop. The Publix grocery stores sell beer and wine; they have a nice selection. If you like premium/exotic beer, then the Whole Foods Market at I-4/Sand Lake Rd/Turkey Lake Rd has a nice selection, and is easy access from I-4.
There are grocery delivery places available, but I don't know that they can deliver beer and wine.
One more option you COULD consider if you are statying deluxe and beer/wine liquor matters: staying club level. Club level usually adds about $150 per day to the cost of yoru room, but you get breakfast, beer, wine, and evening cordials. Beer/wine is offered all afternoon, teh cordials are offered only from 8-10pm, but you can request to take beer back to yoru room (not sure about the others, I've never tried.) Also you get all day snacks/soft drinks and from 4-7 appetizers, and from 8-10pm desserts. Plus you get an extra level of service. Club level won't cover all your food costs, but maybe half of them, if you are there.
It's not exactly a money saver -but if you WOULD be drinking beer in the bar, and have more than two people per room, then club level is nice option to thin about. In a bar, you can easily pay $10 per cocktail. So if you have four adults, and you'd each have two drinks, that's over 50% of the cost of club level right there. Add $10 per person for breakfast (what you would have spent), and club level is not a bad deal.