I have only eaten at DGC which I thought was good, Chip,Dale and Pluto where there.
Here is the information about Character Dining from
Disneyland Today that I picked up this week.
Does not indicate the Characters at Plaza Inn or if there is anyone else other than Mary Poppins at the Tea.
Disney's Grand Califorian Hotel
Happy Camper's Breadfast with Chip 'n Dale
Daily 6:30 to 11am
Plaza Inn (main Street, USA)
Breakfast in the Park
Daily until 11am
Disneyland Hotel
Goofy's Kitchen*
Breakfast Daily 7 to 11:30am
Lunch Daily 12 to 2pm
Dinner Daily 5 to 9pm
Disney's Paradise Pier Hotel
Minnie and Friend's Character Breakfast Show*
Daily 6:30 to 11am
Disney's Paradise Pier Hotel
Practically Perfect Tea*
Fri 12:30 & 3pm
Sat 10, 12:30 & 3pm
Sun 12:30 & 3pm
Wed 12:30pm
*reservations suggested please call (714) 956-675