Hi everyone! We are trying to figure out how to arrange our processional but there are a few complications so I would really appreciate any advice you can give! 
First, my grandfather has a lot of trouble walking (since we picked the venue, he broke his ankle and has started using a walker full-time) and the processional will have to go down a flight of stairs, so I don't want to risk having him fall. There is an elevator, but I'm not sure where it lets out exactly, and even getting down the aisle to his seat would be very challenging for him, so I'm thinking maybe have him seated in a special place up front so that he has ample time to get settled before the ceremony rather than walking in the processional. But then the challenge is how to get a boutonniere to him without everyone seeing me too early? (I wanted him to have a boutonniere regardless of whether he is able to be in the processional.)
Second complication - my MIL was a single mom and did not have any other children, so we thought it would be nice if my fiance could walk her to her seat and have my brother (one of the groomsmen) walk my mom to her seat. But that still leaves the Best Man and another groomsman, so I'm not sure how that would work if the groom and one groomsman walk the mothers in, but the others don't? Is it weird to have the Best Man and one groomsman already at the front? Should they walk in behind the moms? There is 1 MOH and 2 bridesmaids, but then one of the bridesmaids wouldn't have someone to walk with them, which seems odd.
