I am planning to Phoeniz/Tucson/etc. a week in Arizona in early April. (Mostly I want to look at cactus and hike around and eat some southwestern food, emphasis on sorta-Mexican flavors.) Any must-see stuff you can let me know about? I'm still in the planning stages, but this is my first vacation since 2018 -- I had the trip planned for my 50th in 2020, but... covid. Stupid airline never refunded my tix, either. Still mad about that. But anyway, anything I should definitely Not Miss?