There is a chance the motorcycle will be repaired, for significantly less than Carter Power Sports quoted me. Their total bill would have been just over 900$. I've found a mobile motorcycle repair guy who will do the work for 65$/hour and estimates time to clean the carburators at only 2 hours. He'll even pick it up from Carter as part of his 35$ mobile service fee.
The work is to be done on Wednesday. I'll still need to figure out other transportation for lunch on Wednesday Tuesday, though, but not a huge impossibly insurmountable issue.