Any advice for dealing with a picky potential MOH?

My (F29) best friend, who is my closest confidante (and who I’d in theory love to have as my MOH) is extremely picky about… well, pretty much everything, and it’s giving me pause as we finalize our wedding party.

I have been best friends with this girl for 7+ years, and we are extremely close. However, she is one of those people who always has to have things exactly her way, and has strong preferences on literally everything (e.x. She gets mean to wait staff or service workers if they do anything “wrong”; she once yelled at us for changing the thermostat in a shared AirBnB; she will leave if you show up more than 1 min late for a hang out; constantly complains about everything & everyone).

I usually just deal with how she is, but she’s already made comments about not wanting to attend my bachelorette if I choose a destination she doesn’t like, and has complained about having to potentially use her money/PTO on anything related to my wedding. However, she has also made comments for years about how she expects to be my MOH and how “excited” she is for my wedding.

For context: I have literally just started the planning process and have absolutely no plans to expect much out of my bridesmaids, and have told her as such.

If this was any other person, I’d not have them as my MOH or in my wedding party at all, frankly. But I’m afraid not including her would cause her to blow up and start more drama, which I’d like to avoid.

My current thought is to have her as my MOH and be direct that her only obligations are the rehearsal dinner and day-of duties - but still not sure if this would be enough to minimize stress all around.

Has anyone dealt with anything similar, or have any advice for how I might approach this with some tact? Thank you in advance!