Shopping on bulk! Woot!
I don't come here often, but it's always fun to make a trip to Sam's Club! You have to become a member to shop here, but as I'm currently using my sister's card, I just see it as a hella cheap place to shop!
Their produce section has grown over the years, and the quality is actually pretty good... my only qualm about shopping for produce at Sam's Club is that I'm only one person, and am never able to finish all the fresh stuff before they go bad because they sell in bulk.
Here, you not only find hella cheap food, but also some clothing, electronics, office supplies, etc... really pretty much anything. I especially like how they have their own little food court at each location for just in case you get hungry from all that shopping, but really it's not necessary. I've found that every time I've been to a Sam's Club, there're free samples down every aisle, so you could probably get full just trying some of everything.
I suggest you try one of their pre-made pizza's. Take it home and stuff it in your oven. They're huge, cheesy, and you pay less for one pizza than you would from a pizzeria.
FYI, they only take cash or debit; no credit cards.
Yay for massive quantities of food!