Whether it's Christian values or just basic beliefs in decency, you're starting a long and sometimes lonely path in business. I was in office equipment sales for over 30 years. I cannot tell you all the partying and drinking I saw. When I went on sales award trips, it was uncomfortable. I never fit in, was taunted for not drinking and smoking. When I started in sales, there were very few women in my industry. So it was tough trying to fit in with a bunch of guys who were telling all the raunchy stories, getting so drunk that sometimes I'd see them literally crawling on the sidewalk on their way to a morning meeting after way too much partying the previous night.
I decided that I just wouldn't participate. I was friendly, polite, never lectured them on their habits (which weren't the best in my eyes), but figured it was up to them. Many years later I had some of the much younger sales reps tell me how they looked up to me. I always thought that they thought I was Miss Priss. I just wasn't comfortable with their way of life and had to follow my own values.
Sometimes it's best to not fit in with people with different values. Hold true to yourself. It's tough sometimes. There was a guy when I first started in sales who did all the "bad" (to me) stuff. He got to be president of the company that I left. I used to beat myself up, as I had always out achieved him in sales and had a greater knowledge of the industry. I realized it was because I didn't do the suck up thing with the bosses, didn't participate, etc, but I also understood that I could look my clients in the eye and know that I had been ethical with them. He didn't know the meaning of the word ethics. To me my good name meant a lot, more than a few bucks.
You can make some accomodations, but decide what road you want and then be steady on your path.