If it is a long distance group tour, like an all-day or overnighter, typically there is a modern vehicle in the rear for assistance and sometimes spare parts. Jackson is right.
Back in the spring I went the 2 miles to get gas and it would not start,points with under 50 miles were burned up in a completely rebuilt modern ignition system.
I agree with Larry about not having a lot of interaction with others ( we stayed mostly with our group) but we enjoyed it a lot. The scenery was absolutely beautiful with all the lakes, mountains and covered bridges. We climbed Mt. Washington Wednesday morning about 9:30 in our A's and the temp was 31 degrees with 57 mph wind (chill factor was 14) spitting snow and ice and very foggy. The fog had frozen on all the surfaces but it was refreshing after temps in the 90s.
TOB
Somebody travels prepared.