I've gotten towel animals at POP, BW, BC, but that's it. And at POP, there was one stay where we walked by rooms with tons of the darn things in their windows and we never got one, not once. It did occur to me that our entire area was a 'towel animal free' zone. It would seem that our housekeeper didn't know how to make them.
Funny story.....I took my 32 y/o dd to WDW for her first trip a year ago. We started our stay at POP before moving to BWV. We went to the room, and no towel animal. I didn't say anything since my dd wouldn't have noticed the lack because she had no idea they even existed. Well...we left our room, to look out over the railing at the lake area...dd noticed the window next to ours had some very cute towel animals. She just looked at me and whined (yes, a 32 y/o whined!!) why didn't we get any of those cute things!!? I just shrugged my shoulders and said you don't always get them. Our housekeeper just happened to be coming out of the doorway a few doors up....she 'ahemed' and pointed to our window....yep, two of the cutest towel animals you could imagine were sitting there. We hadn't even looked out, or at, the window.
I hate to see kids getting disappointed when they don't get these. While they are cute, they are only towels. If you get a housekeeper that has no idea how to make them, it won't matter how much you tip. Well, I guess if the housekeeper really wants that tip, she can go ask a friend to make her up some towel animals. It's just nothing I'm going to worry about when going to WDW.