We had been told that we HAD to request Ricardo, because he's the best server at YSH.
So, I called and asked that they add a note to our reservation that we would like to request Ricardo as our server. The lady (and I'm using the term loosely, here) refused to do so. She explained that it would be more effective to ask at the podium when we arrived because they wouldn't be able to guarantee it on the reservation. I told her that I understood that, but we'd done it in the past, and to please just humor me and put the note on my reservation. She again told me no. I was extremely ticked off. I hung up on her after telling her that she's a prime example of what is wrong with Disney's lack of customer service these days. I then contacted a friend who is a CM with access to the reservation system and had them add the request to the notes on our ressie.
Then we got to YSH early to make sure that they saw our request, and would have enough time to work the table assignments so that they could accomodate our request.
It was Ricardo's night off.
So our server was Thomas, and he was excellent.