Sheesh, don't let them scare you with their answers!
It totally depends upon the priest, and since your Msgr. is old school, it's going to be pretty straightforward and not very personal (read that as sexuality-related) at all.
He'll ask if you are entering into this marriage of your own free will, about how the two of you get along, whether you have discussed raising your children Catholic and if you will keep a Catholic home. We had to each fill out a form - there was a question on there about mental illness, which through me for a loop - not because I had any! It just seemed odd, but when I thought about it later, it made a lot of sense.
You just have to realize they are trying really, really hard to ensure the couple knows what they are doing and are mature enough to make a good, solid match.
Don't worry so much about the personal interview.
The premarital sessions are amazing - no matter how long you have dated, or how well you think you know one another, you will discover NEW things - and there's still more to discuss.
Good luck!