Anyone can share what is the line up for a ROM solemnisation?

i am intending to do a reception for 40 pax only and found my venue..

we booked the place from 12 to 3pm and my JP is coming in at 1pm to do the solemnisation which he say can be done within 15 to 30 min.

I am thinking of getting a band in.. and emcee but will it be too much for a ROM?
it's only 40 pax in a small cozy area.

let me know if anyone can enlighten. thanks!