I was extremely close to my late grandmothers as a kid, and I really want to honor them at our wedding.
We're planning on having a table at the reception with their photos on it, and a sign saying something along the lines of "we know you would be here today if heaven weren't so far away".
There's also a few details incorporated into our wedding in honor of them. We're getting married on my maternal grandmother's birthday (picked the date before realizing this and it seemed like a sign). Since I always played cards with my paternal gransmother, we're putting a deck of uno on every table for people to play during cocktail hour. I also might be incorporating their favorite flowers into the bouquets.
Would it be weird to have a note on the photo table explaining these tributes? It'd mean a lot to me for people to understand the significance of these things. We're also planning on having a brief moment of silence for them at during the ceremony.