I refuse to discard any breastmilk if it wasn't consumed, so I mixed the rice cereal with formula. The babies were in good moods and it was in between feedings, which made me think we would have a successful first attempt at solids. I lined our new high chairs up in a row.
Amelia loved every part of feeding. She wanted to grab the spoon and feed herself. She opened her mouth each time and happily consumed everything she was given.
Maddie wasn't the most comfortable in the stiff high chair, but she enjoyed her meal in the comfort of her daddy's lap.
I don't know how I'm supposed to balance feeding all three at the same time! We've all mastered bottle propping so all three are fed in under 15 minutes. Our first attempt with rice cereal involved lots of fussy, attention-seeking babies, and that was with two adults. I'm certain it will get easier when they are able to feed themselves finger foods, but until then, this is just another challenge I'll have to figure out.
Update: Just since posting this, I've received advice from fellow triplet moms. It was suggested to use one bowl/one spoon and go down the line. Babies can sit in bumbos, bouncers, high chairs, etc, as long as they are upright enough to eat and comfortable. If one baby takes too long, skip him/her and keep going to the next baby. Keep alternating until the bowl is empty.