I’m a female member. Is an allowance of 10,000–20,000 yen too low for spending about six hours together on the first meeting, going out for dinner and to a bar?

This is Saito♪. Since the arrangement says the first meeting is intended to last around four hours, it’s only natural that different people will interpret “as a guideline” differently. Since this is ultimately a matter of free choice, why not work on building the resolve to leave after about four hours, according to your own judgment? Based on your wording, it sounds like there was no adult relationship (intimate). But without knowing what level of woman you are, whether there was no more last train, and various other details, I can’t say whether the allowance was appropriate. You must have been putting up with a lot. You did well.