I see everyone's recommendation for Jiko and raise you the Wanyama Safari. It is a great way to celebrate your birthday. There is a 30 minute or so pre-safari snack. Then you get about a 90-minute safari around the savannahs at AKL, complete with CMs who work with the animals on a daily basis. The Safari is followed by a feast at Jiko, including wine pairings. Is it pricey? Yes, it runs about $200 per person including tax and gratuity. But we also think its one of the few experiences at WDW that is almost underpriced. We have done it twice (once to celebrate our engagment and once for our anniversary). It is a great way to celebrate your birthday and then you still have all night to do something else (the Wanyama ends between 7-7:30).