Get there before it closes and check out the fungarden, if you’re into that sort of thing. Otherwise, just enjoy the pizza.
Update: When I wrote this, I meant get to convey that people should get to Luigi’s before it closed for the night, not before it closed indefinitely. As far as I know, they are doing quite well and are in no danger of shutting their doors for good. A slice and a soda is still the way to go.