Visitors will need three things for their visit,
1) timed entry ticket,
2) photo ID, and
3) park entrance fee OR valid park pass.
Each private vehicle entering the park will need a Timed Entry Ticket for each day the vehicle will be in the park between 6 am and 5 pm. The reservation-holder must be in the vehicle with photo identification when you arrive at the park. The Timed Entry Ticket includes a $2.00 non-refundable reservation fee which is separate from the park entrance fee.
For more information and to purchace your timed entry ticket, visit: Arches National Park Timed Entry at the recreation.gov site