One thing people don't tell you about being a mom. You will learn to go to the bathroom with someone on your lap. Yes it can and will be done.
I was at kings island I had to go so bad I couldn't wait. There was no way I could wait for the handicap bathroom and there was a line. This lady asked me if I wanted her to hold the baby while I used the bathroom. Really nice but no way is some stranger going to hold my baby let alone while I'm not right there, so there she was on my lap the whole time.