No, ideally you want the humidity as close to 100% WITHOUT condensation dripping on the eggs. But thats ideal. You dont need the humidity that high. Im sure as long as its over like 90% your eggs will hatch fine.
I havent bred yet, i hope to next season, but i will probably go with the substrateless method with just water too. Seems the easiest. After i get breeding down i may venture out an try some other methods just to gain experience with them.