Translation of rutschig

I hope you could understand my last letter to you. You see, when I write in Spanish I am not very confident. I always question myself and each and every sentence takes about fifteen minutes.
Hemingway is trying to tell us a story about two people cannot fulfill their desires and needs, such as having free sex, drinking alcohol, spending the nights in bars and clubs and generally having fun.
At around eight in the evening we were back, took a hot shower and met our friends for a fancy dinner. They were leaving the country the next day and we would stay there another three days.