From searching around the Interwebs I can find information about getting a Mongolian visa in the Chinese border town of Erlian, Inner Mongolia, but not so much for getting one at the capital of Inner Mongolia, Hohhot.
For Erlian there are forum/blog posts saying the consulate officially opens at 8am but they won't actually accept visa applicants until 9am. Your passport will then be ready for pick up in the afternoon, about 3pm, just before the consulate closes.
Does it also take so long in Hohhot? I was hoping it might only take an hour or two.
(I'm only asking about the expedited/same-day visa service for which the fee is higher.)