[quote="grasscutter, post:3, topic:296385"]
Would the baptism be during Mass or held separately?
Either way, the Priest will direct the proceedings so it should be easy to follow. If you're comfortable with it, upon entering the Nave it is customary to look for the tabernacle and genuflect. Which is normally done directly before entering the pew where you'll be sitting.
Other than that, what might be your specific questions?
not quite, in this case. Nice try, grasscutter.
Since you are not Catholic, you would not be expected to genuflect toward the tabernacle. Catholics do so to reverence Jesus, present in the Eucharist.
If the baptism is held during Mass, you should also not go forward for Communion.
Other than that, you'll do just fine. Sit back and enjoy.