How to word food options on rsvp without knowing them!

I think you can do something like

a) red meat

b) fish

c) vegan

We were in the same boat! We don't have our tasting/details appointment until mid-January. I agree with @Susan in that if you don't have your final information, you really shouldn't order. It may appear to be a good deal now, but there will be other deals. It would be unfortunate to find out at your appointment that they're taking salmon off the menu and your invitations need to reprinted.... opportunity cost.

I wouldn't order my RSVP cards yet. I would wait until I know exactly what the food options will be.

ETA: Shutterfly offers discounts pretty frequently throughout the year. You will likely see another 40% or 50% off relatively soon.

Shutterfly and all those places offer discounts like that regularly, so another discount will probably come along soon after your tasting.

If you are insistent on ordering them now, I think putting "steak", "fish", and "vegetarian" as options will suffice. You might get some questions from inquiring minds as to what the meals are, but ya never know.

I would definitely wait until I had all of the details to do this. Shutterfly has sales frequently, so you don't need to act now in order to get a good deal. I think there will definitely be some invitees that will want to know more about the entree other than "steak", "vegetarian" or "fish", but as PPs said, if you must order now then that may be your best bet.