He is an interactive plush type doll that will give information about showtimes, attractions, parades, where characters are, tips in the particular park you are in, as well as telling you jokes and singing songs. All in all, he has about 700 different things he can say.
He interacts with emitters that are placed around the park. To work properly he needs to be turned on and facing forward before entering the turnstiles. That is how he "knows" which park he is in. He'll welcome you to the park, and at the end of the day he'll tell you what fun he had. At home he'll still sing songs and tell jokes, but of course the park-related things only work there.
Lots of fun! I love taking him, especially when I have him dressed up in cute outfits. I get more comments and meet tons of people that way. When several of the Pal Mickey Club went on a cruise in January, it got to the point where people would stop to see what outfit we had on him. The one time I walked somewhere without him, I got a ton of people saying, "WHERE is he?!"
I'm sure there are some people who don't enjoy it, or think it's too much work to carry him, but that's okay. Lots of us do enjoy our Pals!