OP still here
And thanks for the great replies y'all. I'm back from the towing trip for some time now (1250 miles towing, 2k miles total on this trip). Truck is now at 13k and planning the next oil change before it hits 14k, which would be 5.3k on the oil, towing an all.
I've learned that the Toyota advertised "Toyota Care" plan really only gets you 3 oil and oil filter changes, plus tire rotations (no balance, just blind rotate). OK, they fill up the windshield wiper fluid...big deal
Besides that Toyota Care is worth almost nothing. Oh, they'll try to up-sell you on engine air filter, cabin air filter and probably some other things as the vehicle nears the 15k mark. I can now see why Toyota Inc decided to "offer" this program: it's a cash cow for them as a lot of people will buy into their additional service "while it's in the shop anyways".
Have a great day and thanks to all for great replies