Congrats! I had a blast with mine.
I think it'll be funncuz my mom and dad haven't gotten along since I was 10 and they both wanted to be there with me and my boyfriend and my grandmother I'm just glad they're getting along Lol :)
Sorry first time mom what are maternity photos?
Just pictures of you while you're pregnant :) the father and any siblings of baby can be I them too. It's just a keepsake to remember your pregnancy, done usually in the 3rd trimester so you have a belly lol, I love the ones taken outside and not in a studio though. You can look up local photographers and see what they offer