The buses huff their exhaust into the morning air as clumps of kids and their parents dot the hotel parking lot. Siblings cling and moms reunite with other moms they only get to see at camp events. There are hugs and smiles. It’s not what I anticipated. Specifically, I expected tears--mine and my son’s. After all, he’s leaving home for the first time; he’ll be gone for four weeks; and the only other kid he knows is one he met briefly at a pizza party months before.