I found out that the rate they charge is indeed $12 an hour with a $12 travel fee and 4 hour min. BUT it is still $12 an hour for up to three kids, the extra doesn't kick in til the 4th child. YAY! I have three. So MVMCP is going to cost me about $200, but what the hey--it's been 6 years since husband and I could ride the mountains, Pirates and hH without taking turns or reassuring little people so I am going to have a great time! And since our resort for the week is less than $200, I don't have to feel too guilty!
Thanks for the help everyone.