Wawa is amazing, not only do they have a good selection of stuff, the stores are laid out perfectly. Customers get in, get their stuff, and get out. Fast. Even with dozens of people at peak times, you can always get what you want much quicker than in
7 eleven or the like.
As far as their goods go, the iced tea is probably the best I've had short of Snapple. If you're buying some for yourself, spend the extra 50 cents and go from the 16 ounce to the half gallon jug. Even if you can't finish it, you at least get the satisfaction of quadrupuling your iced tea goodness for almost nothing, and when your buddy inevitably requests a "sip", you can be secure in the fact that he's not going to down half of your newly procured drink. Their coffee is also pretty good. The only time Wawa can ever suck is when there's a billion kids crowded outside smoking and trying to look cool.
Mojo Jojo regularly consumes entire half gallon iced teas. This is very hard on the stomach, bladder and any plans one has for sleep in the near future. I'm sure it also has something like a gazillion calories, not that I care about that kind of thing.