Whoa. Talk about endless possibilities!
Did you ever see "Return to Oz?" If so, remember the part where Dorothy has to pick out one item in a gigantic room full of treasures to save her friend, Tick-Tock? It was such an anxiety producing moment for her to pick the right thing...well, you could be like Dorothy surrounded by lots of treasures at the Sleepy Poet Antique Mall, minus the impending doom if you don't find the right object.
Plan to spend hours going up and down aisles of other people's stuff they want to sell. It definitely took me down memory lane...I found myself pointing to things that I recognized in my grandmother's house (or even things I grew up with for that matter).
The general rule is if you find something you want, but it is more than $25 you can ask an associate to check if the owner will allow you to make a cheaper offer. If, however, it's less than $25 there is no negotiating. The associates are helpful and are willing to hold the items you want at the front checkout area so you're not lugging it around the entire place (it can get very heavy and you need free hands to pick up more stuff). Be sure that what you purchase is what you want because they do not do returns.
When I was little, I didn't understand why my parents loved shopping at antique stores...it was so bo-ring. I admit, I am now at that age that there is appeal in walking through old stuff and bringing it back home with me. If you find that appealing too you will definitely want to come here!