OP, I don't have any detailed info on the venue for your wedding, but this is what we did for ours.
I had a small wedding with only 65 guests so the only small children involved were my three nephews ranging in ages 9 months to 3 years. They got dressed up in cute little outfits and did attend the wedding ceremony. Then I hired (and paid for) two sitters from the hotel across the street where my brother and brother-in-law were staying for the formal sit-down dinner. Following the main course, my brother and my brother-in-law went to the hotel and picked them up and brought them to join us for the cutting of the wedding cake and for the rest of the event.
This worked out well - the kids felt a part of it and loved eating cake, but were also able to take a break and nap. The parents were able to enjoy the occasion both with and without the kids and no one worried or stressed. Can you come up with a compromise like that?
I had a small wedding with only 65 guests so the only small children involved were my three nephews ranging in ages 9 months to 3 years. They got dressed up in cute little outfits and did attend the wedding ceremony. Then I hired (and paid for) two sitters from the hotel across the street where my brother and brother-in-law were staying for the formal sit-down dinner. Following the main course, my brother and my brother-in-law went to the hotel and picked them up and brought them to join us for the cutting of the wedding cake and for the rest of the event.
This worked out well - the kids felt a part of it and loved eating cake, but were also able to take a break and nap. The parents were able to enjoy the occasion both with and without the kids and no one worried or stressed. Can you come up with a compromise like that?

