Well the Phoenix Check in was clean and friendly and efficient. The baggage claim for frontier in Denver was spacious and the screens were easy to read. but the Denver airport is big and hard to navigate.
the plan was very cramped, luckily it was only a 1.5 hr flight. the lights worked and cool air worked. we got free water and soda and they sold snacks and you can buy TV or more which is cool.
I am still a southwest fan