abada ~
I lived in the Coachella Valley many years ago.
I can't tell you about getting equipment in, but I can advise you as to the climate.
Hopefully, you'll luck out and it will be a beautiful Spring day, but you need to be prepared for extreme heat as well. Like Thierryhenry said, "it can be hot as" . . . . Be aware, you'll be in the middle of the desert.
Good luck . . . . I've got my fingers crossed for cool weather for you and all the others who will be in attendance.