It tends to be the way with these things, but as soon as the exhibition opens, some of your interest in it all closes down.  The struggle, and worry, and effort and care simply evaporate, and bring a detachment that leaves you, like everyone else, on the outside; hungry already for the next thing, to do it all over again.  The deep enjoyment is in the process, that much is clear, and when it is done it fends for itself, even against you.