The Telegraphe/Galibier climb is tough, even when you're fresh and Alpe d'Huez is subtely steeper than your average Alpine climb. On the bright side, you do get to do a 40 km descent which is always fun (apart from the 4 or 5 tunnels towards the bottom). I wouldn't worry too much about the big pack on a descent, you'll probably find you'll be in a group of 30 or 40 at most.
I was kidding, sorry. :-)
The Telegraphe/Galibier climb is tough, even when you're fresh and Alpe d'Huez is subtely steeper than your average Alpine climb. On the bright side, you do get to do a 40 km descent which is always fun (apart from the 4 or 5 tunnels towards the bottom). I wouldn't worry too much about the big pack on a descent, you'll probably find you'll be in a group of 30 or 40 at most.