I'm sure there is an easy solution to this but I can't think of it..
FH's grandfather and my grandmother can't make the trip to our wedding because both are in their 90s and poor health. We're already doing a "In Loving Memory.." section on our programs for our grandparents who have passed away, but I wasn't sure how to mention the other two on our program..
Also, what are you putting on the back of your program? We're not putting a "thank you" (those are going at seats at the reception) - so we're doing the in memory of/our address but I think there might still be a lot of extra space..