The mid to late 2000s saw an exponential gain in popularity for zombie walks, due largely to the success of zombie films at the time, such as the Resident Evil movies, 28 Days Later, Zack Snyder's Dawn of the Dead, Shaun of the Dead, George A. Romero's Land of the Dead, and Zombieland.
A: If a toenail has completely fallen off, it can take up to 18 months for it to grow back. A toenail can take longer to grow back if the nail bed has permanent damage. In some cases, old nails do not completely fall off, and they act as a protective barrier to the nail bed until the new nail begins to grow.
I had to have a toenail completely removed. I'd say it took about 6 months for it to grow in fully. But by about 3 months, there was a little nail that I could paint and nobody even noticed unless I pointed it out. By your wedding, I would think that there would be enough of a nail that they could do what pp said.