Lepano,
The Cathedral is an inner-city parish w/ a very mulitcultural congregation. The members range from lifelong members who no longer live in the area but are faithful to the church, to members from the many different cultures that reside in the area. Not a huge congregation, but one that is very faithful to their church.
As to the Mass schedule, the Saturday evening and Sunday morning Mass tend to attract most of the members of the parish. The Sunday evening Mass attracts a few members, but it is the only Sunday evening Mass in Saginaw, so the crowd is usually varied and diverse, depending on who missed Mass at their home parish that morning. (There is now a Sunday evening Mass at the local college, but I’m not sure if it is “open” to the general public or more for the students)
As to difference in the Mass, generally their are none, they both follow the same script, with the main defference being, the evening Mass is almost always presided at by a guest priest from the community, I am assuming because those in attendance are from so many different parishes in the area. Fr. Wagoner (the pastor) is almost always standing by in the wings, just the celebrant changes from week-to-week.
It is interesting to watch the guest celebrants reactions to the “script”. Some of them are very comfortable with the style of the Mass and some of them are obviously uncomfortable with inviting the congregation to join in the hand motions of the Eucharistic prayer, join in the doxology, listening to the lay people proclaim the gospel and preach.
You should have a very interesting experience if you have never been to Mass their before.