A few points to consider in addition to the other reviews:

1. Alcohol is not allowed on the land/reservation. Please respect this. If it is found, you will likely be fined & banned. This has been made clear for years.
2. The official Havasupai website has all the information you need to book, plan, and have a successful vacation.
3. 2019 many things have changed. Please see their official website to avoid issues.
4. All trash must be carried out, even if you have employed a donkey, they can not carry it. Please plan accordingly.
5. Have fun!!!