“The men went to learn and in the middle of the night, unmarried girls would gather to serve refreshments, giving eligible bachelors an opportunity to acquaint themselves with prospective shidduchim.”
“… and making it very difficult for the men to concentrate on their learning.”
I will not mention any names in case some take this the wrong way(though some may know of whom I speak) there was mashgiach of a well known yeshiva that was asked to ban the practice of women coming to watch the men dance on purim because of pritzus. The mashgiach said to the contrary-this way the men dance better- and in your example, the men will learn better.