Most SBC churches have a Sunday evening service and a Wednesday night Service that wouldn’t conflict with your mass.
Also, You might want to get ahold of a deacon or minister and ask permission so you don’t waste a trip. You could probably just give them the info and they’d just put it in the weekly newsletter or announce it from the pulpit.
I agree with Calgar. Catholics who have never attended a Protestant service don’t know what our Brethren In Christ are experiencing at their worship services. In the spirit of Ecumenism, we need to share openly with each other, what our worship services are about. Afterall, the Protestant roots are within Catholicism, and amazingly many Protestants don’t realize this. We are no different than the Northern and Southern Tribes of Israel … that split apart from the Davidic OT Kingdom, for no good reason.
We all know Christ desires all the Kingdom Children to wake up and realize we are no longer enemies, but in need of reunity under one Universal Church. Think of how amazed the Secularists and Skeptics in the world would be … if all Christians could grow to maturity, give up our petty differences, and reunify as ONE Church, in Christ.
I was raised S.B. … and Baptists love Catholics and our strong moral beliefs on marriage and Pro-life stance. My SB family members are now attending Mass with me whenever I’m home with them on holidays … and they love the Mass ! Yet, they still expect me to attend their Baptist Christmas services … which I do. It would be disrepectful not to.
Any Catholic, married to a Baptist, should respect the Protestant faith and attend worship with them, and also see to it that their spouse attends the Mass on weekly basis with them. Over time … the Baptist spouse will come to love the Mass and desire the Children to be raised as Catholic. What better way to live out true Ecumenism … as Vatican 2 has told us we need to be doing ?
Finally, think back on the early 1st Century Church as proof of Ecumenism and unity. The early Christians attended BOTH the Jewish Temple on Saturday, AND the Universal Church on the 1st Day Sunday. We should never disrespect our roots, but always work to discover the higher truths and elevate/promote Christ’s Universal ONE Church above all others.
Finally, the music and preaching is generally better in the Baptist churches … and we Catholics need to wake up and bring the Baptist ENERGY back into our Church. When they left us a few hundred years back … they borrowed our music and preaching talents !! Its high time they came back home and re-energize us !!!

Also, they love ‘water immersion’ baptism as the first choice … down by the river, in the free flowing waters {if available}, otherwise in a deep baptismal pool !! They can help us rediscover this Didache taught ‘first choice’ of baptism.