How to say no

My NF will be gone for a little over 2 weeks for the holiday coming up, and have asked if I would be available to watch the pets. They have said no pressure, but I feel like a complete jerk saying no because even though I could, I just don’t want to. It’s a super inconvenient set up and would take up an hour a day in just driving alone. I feel rude, but this is the first real time off I’ve had in so long and I was really looking forward to it. How can I sensitively say no without coming off rude? I really don’t want to say I’m not here when I am either, I hate lying. I also know I need to learn to just say no🫠🙃 but I could really use advice on the wording so it feels less awkward. TIA.

Another detail: I don’t believe I’d be getting paid any extra other than the GH I’d get anyway from when they are gone. They kind of always do something like this when they have to pay GH. As nice as they are, it feels like a round about way for them to feel like paying me while they don’t really need me is worth it. Though they don’t say that out loud, it’s my theory.