Does this hotel have a 24 hour reception as we are due to arrive at around 1am. Will be still be able to check in for the night this late?
Yes it is - just let them know so that they can prepare for you.
The front desk is ran 24 hours.
However, let them know you are going to arrive late so they know you will be arriving.
It's a pretty big complex. Even if they're not normally there at that time, I would suggest
calling ahead to let them know of your arrival. I'm sure they will be accommodating.
Get an answer from The Inn at Death Valley staff and past guests.