Dream Annual Pass holders also have access to EMH, regardless of where they are staying.
Although you have access to Salon Mickey as a shareholder, you don't have access to EMH (as EMH means access to the open rides in Fantasyland and Discoveryland only, those areas are roped off from the rest of the park until 10am and unless you are staying onsite, or have a Dream pass, you don't get past the rope until 10am).
The normal turnstiles at the park gates open at around 9.30am, so guests can go into the park and walk/ride the Main St vehicles, browse and shop etc, until 10am.