We loved ours. The best thing about it is that if you or any family/friends go back with Pal Mickey - it will update itself so every time you go it will be there to tell you the little secrets about the parks. Our only mistake was not getting it the first day. I believe renting them will run you about $10 a day, so for me renting one wasn't really worth it. We shared one with our travel mates last time - and we were all constantly fighting over who got to carry it- that is why I will be buying my own next time around!
And the kids loved it - mickey tells jokes which the kids were repeating for the entire trip! it was great.