Watching the bahaviour of visitors and gallery staff is at least as rewarding as viewing the artwork. Sometimes it's a real show within the show. The commercial "art processing" ecosystem unfolds for a couple of days to the eye of the beholder. Discovery, intellectual teasing and outrage about artwork quality, paid fees, etc. form a stimulating atosphere to enjoy. Even if you are not planning to spend a six-digit figure on art you are obliged to spend six Franks on a small bottle of coke ;-)