Hi Athanasios-
“CCM” is short for “Catholic Campus Ministries”. It a university Catholic student organisation. Since the Mass is mostly being held for the students at my university, I assume it’s probably the OF Mass.
-Athanasios
I agree, that is quite likely the form. Aramis has given you a good amount of detail. If they are meeting in a chapel it’s likely to be more informal but as s/he says some of the details really depend on many things. What the worship space is may have an affect (church building, or a small campus chapel, or a meeting room that is weekly converted for a Mass, pews with kneelers or just folding chairs), the “culture” of that group-- the priest and the faithful attending-- what affect will happens. Here is a little
Walk Through the Mass.
I’d encourage you to
call or email whatever contacts they list. Let them know who you are and that you’re planning this visit. I would hope and expect they’ll be delighted that you’re coming. Then hopefully on Tu when you come they can partner you with someone who could help you find your place for following in the missal, if they have one, or any other worship aid, if they have one, and just be there as a support during the Mass. If you’re able to make contact with someone before Tuesday they can answer the specifics for this community. Calling/emailing ahead is something I frequently do and it’s always be helpful to me.
You only asked about the Mass but you’d probably want to know if they’re having any sort of agape/potluck meal afterward you could also stay for.
(I’ve visited the Tues. night Divine Liturgy locally of the Orthodox equivalent of this ministry for college/university age Orthodox. The Orthodox college kids were quite informal in attire. I’m your mom’s age so I was less informal LOL, but still not formal. They had a potluck and a talk afterwards. It was wonderful.)
Reading through what Aramis wrote I’d add a couple things, and i may have just missed them in that post. A candle or oil lamp next to the Tabernacle would help you locate where it is and RCs would reverence that with a bow usually, much as you would anytime you cross in front of the Holy Doors in your church. There may be some holy icons in the chapel or church but RCs do not generally venerate these (but might if from a culture that does.) There wouldn’t likely be any candles to put near the icons, if they do have them.
There are two times, after they’re blessed themselves with Holy water when entering, when people will likely cross themselves again during Mass- at the beginning of the Mass when the priest will call to worship “In the name of the Father and of the Son and of the Holy Spirit” and at the end of Mass again when he will invoke the Blessed Trinity. People may cross themselves at other times, but maybe not. Mary could be referred to by a number of titles but Theotokos is unlikely to be one of them

Probably the Kyrie, if said in Greek, is the only Greek you’ll hear.
The music for any hymns is more likely to be contemporary hymns than chant in a college setting, but it is possible it could be chant. I wouldn’t expect there to be an incense.
They may hold hands during praying of the Our Father. There is a “sharing of the peace of the Lord” following that prayer when people may hug, or shake hands, or just nod.
It’s possible if for some reason there is a large group, some of the lay faithful might assist the priest in distributing communion. There is no equivalent in the RC Mass to the distribution of the antidoron/blessed bread. It would be highly unusual for them to be using something resembling bread for Eucharist. I won’t get into whether you would choose to receive communion. Know that if you approach the priest with your arms crossed over you chest he will assume you are coming up for a blessing and would give you a blessings and no Eucharist.
Gordon Atkinson, a Baptist pastor, recently wrote
four wonderful reflections about his visits to two Orthodox churches, a very new and sometimes confusing experience for him. At one point he wrote “So if you are visiting, it is best to be humble and always think the best of what you see.” I try to remember this
in my own parish as well.
Again, I would call ahead and get a heads up about the level of formality for this group, and whether they’ll have a meal together afterwards. I hope they do have a meal. It would be great to spend that time with them. I pray it will be a joyful experience for you and that you’ll make some friendships with the your fellow college students who are RC. It is entirely possible they could have others there who aren’t Catholic, including some Catechumens.
Apologies again if I’m repeating something Aramis already clarified.
-Marylouise