hello and welcome Chris
I hope that one of the MANY men will answer your posting.
These tours are great fun you see and do so much, I started using JY in 2006 and have travelled as close as Austra and as far as New Zealand.
These tours are not age banded so you can have 20-80 age range, I would suggest if age is important to you ( for most it's not an issue) if there's a tour you like the look of either ring the office or post on the editors board and our friend JULIA will answer you the usual questions which are. Age range, M/F ratio, group size, and Tour managers name etc.
My advice would be sit down and have a good look at the tours, some are exhausting but so worth it for what you see, I tend to go for the full on tours, but there are many more that are more relaxed, my more relaxed ones were Austrian Lakes and Tuscany Highlights, the full on tours are the USA ones.
Any other question just ask.
Cindy