European planning a 10-Day road trip to US National Parks

Hey everyone!

I'm a tourist from Europe, and I’m planning a 10/11-day road trip through the US Southwest in April (21.04 - 01.05). We land in LV and rent our campervan there.

I want to visit a minimum of:

  • Grand Canyon National Park
  • Zion National Park
  • Arches National Park
  • Bryce Canyon National Park
  • Canyonlands National Park
  • Capitol Reef National Park (is it worth it?)

I’ll be renting a campervan and would love some advice on camping logistics:

  1. How far in advance do I need to book campsites? Are last-minute reservations or first-come, first-served sites an option? (this is stressing me out because on recreation.gov and hipcamp some recommended campings look full already)
  2. Should I drive all the time between different campings or are there parks that can be visited from one camping where I could stay for 3-4 nights and just drive for like 1h one way? Any budget-friendly recommendations?
  3. Is 10 days too ambitious for this route or can we actually add something? I don’t really grasp how big this area is, so I’m unsure how much time I’ll actually spend driving vs. exploring.
  4. Is it worth to add Sedona to this list?
  5. What would you do differently if you were planning this trip?

I’d love to hear from people who have done similar trips. Any must-see stopshiking recommendations, or general tips would be amazing. Thanks in advance!