Mariner of the Seas 5 - night kids questions

[Milliegirl229]

We are experienced cruisers but first time in years on RCCL and also cruising with grandchildren, ages 8 and 7. Any information on the kids club would be appreciated or any kidstips for the cruise. How is departing with only birth certificates as adults have passports but the children do not. Thank you.

[orville99]

As long as they are official certificates (issued by the local health department with a raised seal on the original document, you should be fine. "happy feet" certificates that the hospital gives you do not qualify.

[trajan]

Bump and tag. 
 

Also looking at the 5 night with kids, ages 6 and 12. Any recent feedback appreciated. I know both our kids would appreciate having kids around to play with. Anyone have any guesses as to the kid population for the Nov 7 sailing?