Depends on what you're expecting. Pilot Mall sets up a nice big retail store during Sun-N-Fun, but the rest of the year it's mostly a counter, a couple of display cases and some tshirt racks, and a large warehouse.
I live nearby, in Haines City, and my daughter lives in Lakeland, so I've visited the store outside of SNF week.
It's not great for browsing, but if you're looking for something specific it's fine. When I was shopping for a headset for my wife, we went to the store and the sales person hauled out a bunch of headsets for her to try on. (Naturally, she wasn't comfortable in anything costing less than an AMU, but that's another thread....)
If you want to wander around looking at aviation trinkets, leafing through books, pawing through clothing, twisting knobs on radios, etc., it's not so good.