When the actual date of the wedding arrives they will check the guest list with guests booked at the resort. No need to identify yourself, the resort will take care of it !
No, you are free to book with what ever travel service or provider of your choice. Time to use up those points. Just let us know when you have booked to confirm numbers as we get closer to the wedding.
The resort is on the Cancun Hotel strip, specifically 17km away. You can take a taxi, Uber, and some travel service providers will offer a shuttle to the resort when you land. If you're cheap you could hitch hike.
I am not entirely decided on this but I suspect I will make some sort of WhatsApp or group to communicate updates in real time on the resort. The resort has great wifi as per the reviews
As it is an adults only building and costs more, you can only use the Coral services and food options if you are staying in the Coral tower. You are welcome to book the Coral tower and you will have access to both resort sites, as well as the Wedding venues.