I went the first few years, mostly because it was something to do at a time of year when there isn't much to do. Haven't been in a few years. Was thinking of going again this year with my nephew who's relatively new to hunting, mostly because like I said, it's something to do.

How much time you need depends on you. I've gone with people who were bored and ready to go in two hours. lol
Honestly I think two days at the show is probably way too much time. I've always seen what I wanted in far less than a whole day, though if I were alone I might have stayed longer and looked more at certain things. Your interests will dictate it obviously. Huge fishing section, huge archery section, big outfitter section, but if you don't care about those things...