Our daughter did great. The week before, I told her she was such a big girl!
We were going to target so she could pick out a big girl cup!
She picked one, I picked a different style for just in case.
Each day we talked about getting to drink from the cup! I even left them on the kitchen counter so she could see them.
The night before the big day, I threw away, every bit of the bottle stuff.
The next morning, I asked her, which cup do you want to use? She picked the cup, I gave it to her, we never looked back.
It was all matter of fact. I continued to ask her which cup. I asked her if she wanted milk or water, other times, milk or juice. On her birthday, everyone gave her a cup.. All different styles, so she was able to always have choices.