Speaking from a degree of experience 1 week physically isn’t a huge deal. It’s more about being able to come back to the discipline you’ve already created.
I’ve done the whole “I’m doing double gym to make up for the food I shouldn’t have eaten” and I’ll be honest, it’s not a great way to relate to food.
Enjoy your birthday week, have fun and when it’s over just jump back in where you left off :)
Happy birthday week!!!!