I would suggest a Alaska cruise during the summer. Most of the AMEX cruise privilege program have cruiseline doing. Depend on how old is your kid.

Crystal and RSSC would be my top choice because if you are Centurion, I assume you enjoy the finer things in live, but less cater to kids.

Princess and HAL will do if you want a bigger selection of trips to choose from and they do have kid programs and facility.

Good luck!

Cindy