I saw it a few days ago. I've already checked out the spoilers long before the movie came out, looking in the storybooks in the stores as soon as I saw them (though I felt they were intentionally leaving something out with the ending*.... and now I'm not sure how true that is, though the books don't make the ending seem so emotional), and I looked at spoilers on wikipedia and TV Tropes.
There are some toys we don't see in the trailers, I wonder how long until they start making toys of those characters (like the ones in Bonnie's closet).
I was expecting the ending to take place during the day, as opposed to night. Though I guess it does look better at night than it would have during the day.
I can't decide if it would have been better for the movie to have had a little scene or two, after the opening montage, of Bonnie playing with Woody or mentioning him. I guess it works for the ending, where she wouldn't notice him missing. It's amazing he went on the trip - I wonder if she intentionally brought him or if he just snuck his way on the trip.
It's a shame that Bunny and Ducky don't seem to get owners by the end. Seems like they just decide to join the lost toys.
I wonder if the dummies should have been able to talk. Seems they don't talk at all because they're dummies, but Gabby Gabby can still talk despite the fact that her voice box doesn't work.
*I looked at the end of some of the books and saw that they say Woody and Bo Peep look to help lost toys together, but I don't think they specifically mention Woody leaving Bonnie and the other toys behind. Kids reading the books first might not grasp that.