And even at non-party events. I remember when my daughter was a freshman and was at a sorority/frat combined meeting (I don’t think it was a party). She wasn’t feeling well and wanted to go back to her dorm room. Two of her sisters had to walk her back (two so they could return). The frat house was on campus, as were the sorority houses, across the street from her dorm, but the rule was she couldn’t walk alone, even though they hadn’t been drinking and it was probably about 7 pm. Now she could have walked home from the library alone, or the gym, or a night class that may have taken her along the same path, but not a frat house or even the sorority house to the dorm alone.
Her sorority house was probably about 1/2 block from her dorm.