My guests are flying in from many different cities, and they're free to stay at whatever hotel they like since my wedding is at a beach club, so costs will vary from person to person. But here's an estimate:
- round-trip airfare from NYC to Cancun is around $500 per person
- hotel rooms in Tulum are $100 - $300 / night for two people
- let's assume each guest stays for 5 nights and spends $50 - $100 / day on food and activities
So if the guests want to do it on a budget, they can come for less than $1000 per person; if they want to splurge, could be $1800+.