Tracy -- EMHs are essentially available every single day of an onsite hotel guest's stay (at any of the 3 hotels), and they can be used for either DL or DCA, depending on which park is available for early entry that day (there will be signs designating which park is available for early entry around the hotels). MMs, can be explained as, from the
Disneyland website: So, EMH is an every day thing, to one park or the other, for onsite hotels guests only, and MM can only be used on one day, and only at Disneyland, if the guest has a 3-day ticket or more. I think that Tuesdays and Thursdays are or used to be Disneyland early entry days for EMH or for MM, as were/are Saturdays and Sundays. I don't know if that has changed. Mondays, Wednesdays and Fridays should be DCA days for EMH guests only (again, assuming nothing has changed).