i was in a church i attended previously when we got relics from saint john the evangelist (the beloved).
it was really lovely, we had vespers then tamgeed (celebration of the saint) then putting spices and oil around the box and giving it a new cover, then a procession, then we all got some of the left-over spices.
we praised God a lot and it was a very special occasion. it didn't finish very late, only an hour or 2 after vespers.
i suggest u look up the tamgeed for the saints u and print them out so u have the words (like if the projector or computer breaks). hopefully yr priest will know who is coming.
may God bless yr church at this special time