Hey JustNoelle, I'm not sure about the minimum/maximum but I have 45 guests (including me and my FI, photographer & assistant) for the pool deck with a sit down dinner. I was able to get three options for dinner, (chicken, beef and fish) from the ultimate package and I have to provide meal choices to Gina 30 days beforehand. I included the options on the RSVP (I included a picture). I also numbered each RSVP with a guest specific number to help me keep track. Hope this helps!