Be prepared for crashes, these juniors are like dominos, at least they were 4 years when I went. I hope you can ride at 40mph in junior gears too (in the pack). It's windy up there and real flat. I remember hitting 46mph in the pack spinning my butt off. Last I knew there was an ITT that started out in a mine a couple hundred feet below. That was real cool......as long as you aren't very tall, because you'd be climbing in the saddle the whole time.....not much clearance.
The circuit which every stage finishes on is hard. And yes, these juniors are fast. Equivalent to cat 1/2 here in the states.
The food is decent, actually good because you are always starving. (I never ate just 3 meals a day). It's a fun atmosphere, good times if you don't get dropped every day.
If you get a flat, good luck getting back on. That was me on at least 3 stages. The resulting 3 hr time trials over Canadian tundra were character building. Never before could I see the pack 10 minutes up the road, there are some real long stretches like that.
If you are like me and can't recover for jack, be ready for some hurting. I could barely climb the stairs at the school by the end of the week. It took me 2 weeks to recover when I got home.
Have fun.