Dear Aunt Molly,
I can't wait to come live with you for a few days! Mommy said I should write to you and remind you what I like and tell you all about my routines. I've been a little bit of a punk at home so Mommy hopes I'm good for you and Uncle Bob.
*Please feed me a little scoop of dry food in the morning and a scoop of dry food mixed with wet food at night. (Feel free to have Uncle Bob drop food on the kitchen floor while cooking. :-) )
*When I come inside from going potty I get a little treat. You can also tell me "door" and I'll close the door behind us ;-)
* Mommy will bring my kennel and you can put me in there whenever you need to. I haven't been in there for a while so I might whine but just ignore me.
If I think of anything else I'll be sure to write you again.