This thread has had too many words wasted on what is really a non issue. What I fail to understand is why anybody would want to spend a single penny patronizing a store with policies they don't like.

Either visit during the day and speak to a real manager or write to corporate and ask for a change in policy, especially if the window has longer hours than the inside counter. OR spend your money elsewhere, not only at night, but entirely. If this is the ONLY place open at night, keep food at home, or brown bag it to work.

If it's really important to you that you can eat here, consider coming during busier times during the day with a large sign saying the place is unfair to cyclists and pedestrians and asking for support in getting them to change by with holding business.

Another alternative it to raise the bar on the embarrassment factor, by seeing of a local TV station is interested in a story about how they serve only drivers at night, and turn away pedestrians and cyclists. It's not a big story, so don't try to sell it that way, but it might have a certain appeal (especially if the local reporter didn't like the place already).