What I've found is that most parents feel as awkward about as you do. They will take the information and then go read their contract. You'll probably then get paid. Whatever you do, don't back down. They will take advantage of that, not even as bad people, I think it's human nature. If you feel really super awkward I would send them a quick email saying, "Per the contract I was supposed to receive payment for the days you guys were on vacation. So that would be due ______ thanks so much for your prompt action."
It is awkward but it's why we have contracts right? GOOD LUCK!
