just completed desert tour.
I just toured from San Diego to Phoenix to Alamogordo NM.
I had absolutely no problems in desert - took 2 water bottles and each morning grabbed a qt Gatorade to stick in side of pannier. If a chance came up - filling sta etc. I did refresh h20.
Biggest problems on ride
Saddle sores ( bought a tube of Buttr at a bike shop in phoenix) solved problem
Chapped lips - this was an ongoing problem
sun - didn't burn because I had a good base to start, but it really wipes you out
Funny happenings - saw lots of wet backs - tended to sneak up on them since they weren't expecting a bike. Also saw lots of border patrol
Tom