You know the answer to this question and that's why it feels ackward.
Can you fudge it? Sure. But then your daughter will have to be in on it...and you get to explain to her why lying isn't really a lie if dad gets a deal.

LOL.
It's such a bummer that 10 is the magic number. Although I will say my oldest just turned 10 and she can't stand ordering from kids menu anywhere...she wants the adult meals, no chicken tenders and fries for her. LOL.
Good luck. It's $20 per day more but then she gets more variety and choices and maybe dad can eat her leftovers?
Oh and could you bump it to the week of her birthday? That would be a win-win. If I were so close it would be tempting for sure.....