The front of the restaurant was, of course, a gift shop.  Lots of generic space-themed toys you’d find in any aeronautical museum giftshop, plus, like, a smattering of plush toys and the like of Mars 2112’s proprietary characters.  (Captain Orion!  Princess QTPi!  …no plush dolls of Professor Mars!)  Again, the experience was free, because it’s just a restaurant, so — in theory — the restaurant gets into the black by selling touristy trap stuff and charging twenty bucks for a duck-covered personal pizza.  In theory.