1) No.
2) They do a group happy birthday with twirling napkins.
3) Of course, when they get to the table, they will motion happy birthday.
4) This happens during their normal walk around to each table.
5) Additonally, "fur" characters do not talk.
NOTE; There is not enough time to celebrate everyone's "special" day. There are just too many birthdays, anniversaries, and other special days to pay attention to each one.