Hi again, Sheena! It's nice to see you back with another question. I'm glad you've confirmed that you'll be on the Disney Fantasy as that is the only ship that offers the
Royal Court Royal Tea!
I do hope you're able to take your children to this amazingly special event. While I can't tell you exactly which day and time this will be offered on your particular sailing, I can give you some idea from past sailings. In the past, I've seen the Royal Court Royal Tea offered on port days (sometimes the third day of the cruise) around 3:00 p.m. Because each cruise is unique and guests can only purchase tickets for this event once onboard, you'll have to wait until you arrive at the port to find out the exact day and time for your particular sailing.
If you haven't already, check out this post from the
Disney Parks Blog about the Royal Court Royal Tea to see more information, photos, and a video about the event. What a memorable experience this will be for your family!
Have fun planning, Sheena!