2 days off in a span of a month…

Sorry for the long post:
I got my schedule after the family I work for had been out of town for the last 2.5 weeks, and I’m scheduled to work every single day from the 15th of this month until the 18th of next month, with only two days off in between, the 19th and the 9th.

I’m kind of at a crossroads because, in total, the family has been out of town for 5–6 weeks over the course of the summer. As much as I’d love to make that pay back, only having two days off in that amount of time is a lot. Most days I’m working 8-hour shifts, and if it’s not that, I’m doing overnights.
I’m just at a loss for words. I understand they want to give me the work to make up for the lost time, but that’s a ton of days in a row. I also feel horrible complaining because they pay me very well and help with my insurance, along with a couple of other bills.

I’m not really asking for advice because I know the right thing to do if I’m stressed or upset by working this many days is to speak up and say I need more time off. I’m really just looking to vent.

This family is particularly hard because it’s three children, and they aren’t the easiest bunch. They never clean up after themselves, I have to beg them to shower, they flat-out don’t listen to me, and on top of all of that, they’ve adopted a new baby animal. They already have another outdoor animal that’s currently getting neglected, in my opinion.

I just feel like I’m going crazy. I also feel bad complaining because some days are really easy, and other days I feel like I’m going into military training.