I (29F) recently became exclusive with a guy (28M) who has an upcoming trip with guys and girls with the intention for the guys to meet women

I (29F) have been seeing a guy (28M) for a while now and we just became exclusive. Things have been going great other than one thing. He has a pre planned trip with his guy friends. There are also four girls going, one of the male friends invited a couple of his female friends and asked the girls to each bring a friend. The whole purpose of this trip in his words was for the guys to meet girls, but now things have changed since he met me. I’m not controlling or jealous but I feel very uncomfortable that they’re all going on a trip where excessive drinking will happen and where everyone will be in close quarters. The other guys are all single so I know they’ll be looking to get with girls. Any advice?