I will be riding this year with my 14 year old son on our tandem and he has celiac disease, and can not eat anything with gluten. Does anyone have experiance with this on RAGBRAI? Any suggestions on how to plan for this would be appreciated. In our experiance when we travel small towns can be a probelm. This years ride is going to be alot of small towns so I have some concern. Do any of the week long traveling food vendors offer Gluten Free options?