HA HA HA HA That is TOO funny!!! But seriously, you could probably skip hanging out in Dr.'s offices and just send samples and info to DISers!!!!
I put our 2 photo mats in a large ziplock, wrote in pencil the boys' names and stateroom on the back, and labeled the colored sharpie pens with 'please return to' our stateroom number. I mean, if I get them back so be it - if not, I tried

I'm also including two bags of candy as a thank you (one for each photo mat) I also wrote on the ziplock our stateroom and that all signatures were appreciated. You can ask for specific characters, princesses only, or classic characters only, etc. Leave it at guest services, and pick it up before you get off of the ship.
See what I mean? I've never even been on a cruise and I know this stuff... anxiety, your best friend and worst enemy
PS love that we're all on here this morning - gotta run to church and you know I'll be praying for (among other things) smooth seas!!!!