I have never seen Rosie or any of the players at DHS for that matter. When do they come out?
Those are the Citizens of Hollywood (COH) street performers and they are hilarious! There are many different Citizens who perform skits and funny antics through the day at DHS. The specific schedule is not usually available, even from Guest Relations, but one or more groups of Citizens normally perform every hour from around 10am to maybe 6-7pm or so. Each performance lasts 25-30 minutes typically. As far as I know all COH shows take place on Hollywood Blvd. or nearby Sunset Blvd.
The COH appearances alternate with High School Musical shows - the
HSM is too noisy to allow much else to go on in the area.
There is a break in COH performances for the Block Party bash although many Citizens usually entertain the crowd on Hollywood Blvd. waiting for BPB to begin.
A typical schedule might be something like this:
9am Park opening - COH Folks Do Crowd Welcome and Countdown -
"Lights, Camera, Action!"
10:30am - First Regular COH Appearance
11:30am
12:30pm
1:30pm
2:30pm - most COH folks on Hollywood Blvd., individually entertaining
people waiting for Block Party Bash, but on more than one occasion I
saw COH folks do a "normal" performance on Sunset Boulevard at 2:30pm.
4:00pm
5:00pm
6:00pm
7:00pm(?)
This will vary depending on park hours or who knows what - everything at Disney is subject to change.
To summarize -
When the High School Musical show ends, a COH show (or shows) should begin shortly afterward. If you see a COH show ending, another show will likely begin in 1/2 hour.
The COH are a hidden treasure of WDW. They are always entertaining, and frequently hilarious. We normally spend a few hours each day of our visit just watching COH shows. The only kicker is how to fill the 1/2 hour between shows.
Please take the time to watch - you won't regret it!