I built this after my own wedding chart broke Excel. Paste the list, mark keep-aparts, press Solve. Print posters and place cards. $29 once, no subscription, free to try.

Paste your guest list, add keep-apart and keep-together rules, and press Solve. Every guest flies to a seat on your real floor plan. Print the poster, place cards, and escort list, or text guests a find-my-seat link. $29 once, no subscription, free to try.