Tandem on supported bike tour, luggage question
We're going on a 14-day supported bike tour in Europe this fall with our tandem. We are allowed 1 "day bag" in the van which should be accessible during the day. For those of you who have done this type of thing, did you find it useful to have a rack and rack bag, or a pannier on your bike as well? Why or why not? I'm concerned that we may want to buy something (even a picnic lunch perhaps) and have no way to carry it, and as it's fall in a mountainous region we may want rain gear or extra clothes in there. Then again we don't need the extra weight and items when we pack our bike for travel unless it is really going to get used.