What I don't think many realize is how much work it is to coordiante travel (airfare, hotel, van rental, food, entertainment, etc...) for 16 or so families. There is also the legwork required to get the infamous travel papers from WSYSA. This is no easy task and usually requires a drive to Federal Way and most people don't live very close. I know first hand that it takes many hours (could be measured in days) of planning for a travel event.
Like many have said these teams typically travel 3 or more times per season so most parents do not go and that leaves the team manager and maybe 1 -2 chaperones in charge. Also with most of these teams (not all) the coach takes no responsibility for the chaperoning part they are only there to coach.
Have you ever tried to take 16 - 18 teenage kids to a movie or dinner by yourself? Have you ever had to pay for a players meal because the parent didn't send enough spending money? And never get it back? Have you ever gotten up 2 -3 times a night to walk the halls and make sure the players are not out and roaming them all hours? What about doing the team laundry at 1 or 2 in the morning because that is the only time the 1 washing machne is available?
On a perfect team these responsibilities are divided amongst the families but I have yet to see a team that has more than 1 or 2 volunteers. Most people say "how much do you need so I don't have to volunteer?"
Having the team pay an extra $20 - $30 for the team managers room and airline ticket (no food is never covered and shouldn't be) is a small price to pay. Remember this is not about paying for a professional manager (we already pay for a professional coach) but just a simple coverage of the largest part of a travel expense for someone who works hard and won't get any rest until they get home and go back to work.