My sister bought a dinner for two groupon and bought one for me and my husband dinner for two groupon. Can we both use the groupon on the same table reservation?

I dont think so. It says limit one per table in the fine print of the groupon offer

No, it says right on the instructions on Groupon that there can only be one groupon per table. I guess you could call the ranch and ask fo an exception... or ajoining tables.

One groupon per table

I would call them if I were you. Me any my wife let our expire due to the fires they had up there a little while ago and they were very friendly and honored our Groupon. Just ask. Can't hurt:)

No I don't think so honor two different Groupons at one table but you might consider calling Groupon to see if there is a dinner for four available and they might be able to combine your two Groupons.