My family and I and a bunch of fellow convention-goers are arriving at SFO on Wednesday. It seems that the best transportation alternative if BART is on strike is reserving a whole Super Shuttle van for our group ($75 divided by 8 people as opposed to $17 each). My question is this -- if I wait until Monday to see if BART actually goes on strike, am I likely to have trouble reserving a shuttle because everyone will need them? Should I go ahead and reserve one before knowing for sure about the strike? Thanks!