I wasn't thinking of regular morning EMH but rather the hard-ticket EMM schedule.
I have a PPO breakfast at BoG and I know the odds of the opening time being pushed up to 8 are slim at the time of year that we're going, and the EMH schedule should stay more or less the same. First week of March usually isn't busy enough to justify a lot of hours changes. The wild card is whether they'll add Early Morning Magic dates and, if so, whether they're likely to fall on the evening EMH day.