Children can be a LOT of fun at weddings (especially busting their cute little moves on the dance floor!) Unless you already have children, of course – in which case I’m sure they’ll be a big, beautiful part of your day!
It’s your decision because it’s your wedding! Do what makes you happy! Pictures may be hard, but they also may go amazing. You won’t know that until the day of. Maybe do some way of practicing beforehand if possible?