honest opinion ladies

Hey everyone so I am planning to visit my boyfriend (long distance relationship ) in another state where my sister lives. We do not agree so much with my sister about stuff especially staying out late.I do wanna see her but not spend my vacation nights at her place as in I wanna be able to have fun without feeling like I am being restricted.Also I do not want to hurt her feelings .Advice me on how to go about it you're allowed to be as honestly brutal as long it helps.