Covid...The answer to most inconveniences of life right now. Yes, even a year in advice all Saturdays were booked till 2023. But now you have an excuse for a long weekend....you're welcome ;)
If they are included on your invite then yes. We did want to keep this a more mature aged wedding aside from our ring bears and teens that are close family members.
Your invite will specify if you have a date option. We followed the rule of thumb if we know your date and you are serious date (or obviously married) you will have a plus one. We are having an intimate wedding and want to avoid random Tinder dates.