Save the dates - include plus ones?

Just do "and guest" unless you know the other persons name

You don't need to add the plus one to the save the date.

If I was giving a plus one I didn't list it for the save the date. Most know they will be getting one

I put and guest on mine, but I knew we didn't have any space limitations and would be offering everyone a plus one.

I don't think it's necessary though to include it on the save the date.

I would leave true plus 1's off the STD. Clearly if someone is in a long term relationship then I would address to both people.

I included "and guest" on my save the dates. I thought it was important to include, especially for out of town guests, in case they wanted to go ahead and begin looking at flights and accomodations. If you do opt to include "and guest", remember that it must also be included on the invitation. It locks you in, so just be sure you can accomodate all the "and guests" before sending them out, if you choose to include them.