Can Nutmeg be substituted in for Mace?
The flavors are very similar (they are different parts of the fruit of the same tree, nutmeg being the nut itself, and mace being a covering that grows around the shell), although nutmeg tends to be slightly stronger and more forward.

in a complicated hot dog recipe, I imagine that the substitution should work well, although you might choose to try your first batch with 3/4 the amount.