We love your kids, but would like for our wedding to be your night off. If your child was included on the invitation or save the date, it is up to you if you want to bring them or not.
We will have a shuttle called The Trolley bringing guests from hotels to the ceremony and home from reception. If you think you may want to leave early, we suggest driving you car so you don't have to wait until 10pm to be picked up. Trolley will start around 1:00pm and run till 2:30pm and then come back after reception and run from 10:00pm till 11:30pm
If your invitation says "and guest" then yes, if not, then we prefer it be just you.
Semi-formal, please. But we want everyone to be comfortable, so if those shoes are too high or that top button is to tight, let it all hang loose.