I'm closing in on 5,000 miles and just had the 12 month Toyota Care (tire rotation and oil change) done last weekend. It's performing beautifully and I don't foresee that not continuing.
The only major(ish) thing I wasn't expecting is just how tail happy an unloaded truck is when it's slippery out. There have been a couple of pucker moments but you learn quickly when they're likely to happen and a quick turn of the 4WD button solves that problem.
I'd say I wish there would have been more snow* so I could see how it handles some deep stuff but screw that. I hate shoveling more.
*which means we're probably about to get absolutely DUMPED on