We're taking my baby to Alaska on the Grand Princess this summer. We've requested a crib, but I'm trying to figure out the sheets situation. I've seen that sometimes cruise lines have small metal cribs and some do pack and plays. I'm fine with either, but I wanted to bring a sheet with us because from hotel travel we've done I've found that they usually just use a flat sheet and it's hard to keep it tucked in properly, especially now that she's at a super wiggly stage. If anyone has experience with the cribs on the Grand, I'd love to know what they provided. I'm also open to any tips for cruising with a baby. I've traveled extensively before but I've only done one cruise and this is our first real trip with the baby. Thanks!