Ask your guests to minimise going to high risk areas leading up to the wedding.
Mask up (Obviously mandates are in place now, but even without) and practice social distancing. (sorry if i'm stating the obvious here)
Ask your guests to stay at home if they are feeling unwell, and obviously get tested.
Be in touch with your vendors and check to see if they have a game plan.
Have that discussion - If certain guests are not able to attend, or if your wedding venue suddenly had to close, would your wedding still go ahead? And what would this look like.
Have a champagne congratulations straight after the ceremony to encourage less hugging and kissing. This way you and your guests will still feel like you're still celebrating to the max.
Limit the size of the groups in your family photos and possibly ditch the photo of everybody. Remember the walking back down the aisle photo can double up as this, so utilise this shot instead.
Remind your guests to practise social distancing throughout the day. It's amazing how quickly it goes out the window after a few drinks.
If possible put your dance floor outside