I agree. I don't expect any real sex. I'm not sure what "explicit" means to some of the reviewers posted here. My guess is also masturbation and lesbian touching. I doubt anything will be shown. I asked one reviewer and he(or she) said he/she couldn't tell if it was real. It's shot voyeuristic style. I am still excited to see this.
Explicit to me is that the actors for real are doing it, and the camera is showing it at least once or twice, but it could be like Nymphomaniac and CGI the fuck out of it lol