We are out here at the moment and I bought one of these for my son. I have used it maybe 8 times in the 14 days we've been here. Kids meals average around $5 so you save that each time. You still pay for drinks, but its valid in places like ponderosa, sizzlers, macdonalds etc, If you are staying offsite, then yes I think its worth it. I know Ive saved more than my £10 and no-one checks to see if they are signed or anything so you can always sell them on afterwards
Karen x