As for food, I highly recommend pizza at Kringles Kafe in the Christmas section. I don't know what it is, but everytime I go I CRAVE it. At a relatively low cost might I add. If memory serves me right, you can get a combo with a slice of pizza, fries, and a small pack of Oreo cookies for $6. Of course with free drinks, its a good deal IMO. And for dessert, Udderly Blue's ice cream is fantastic. I get a blue waffle cone every time. Its great.
Now ride wise, obviously the coasters take the cake. With the Voyage running much much smoother after all of the trackwork this season, it takes the top spot. But for the flats, you cannot miss the Liberty Launch. It packs a good punch for its size, as others have said. The Scrambler, Raging Rapids, Revolution, Gobbler Getaway, and the HallowSwings are all rides I never miss. Some of these aren't the most "thrilling" but I always enjoy them.
In my opinion, Splashin' Safari is a great part of the park to visit even if your not normally a waterpark lover. They have something for everyone there. Rides to not miss in here are: Mammoth (which I have yet to ride, unfortunately.), Wildebeest, Pilgrims Plunge, Jungle Racers, Zinga, ZOOMbabwe, and Bakuli. The Bahari Wave Pool and Lazy River are also nice places to go to cool off. Honestly, I could spend a whole day in the waterpark.
I hope this helps you out a little, have fun!