There are progression opportunities e.g. my boyfriend has gone from being a waiter like me to team leader 1, then team leader 2 which is basically duty manager. I feel like I could do the tasks he does, and often help him out anyway I just don't want to be involved with the business because the manager isn't so ethical. He sleeps at work overnight sometimes because he can't afford a car, he sexually harasses a lot of us (slap bums, call us sexy and talks about his kn*b a lot/makes innuendos) and he takes money from the safe to pay for his taxis or cigarattes!!!! I don't want a key to the safe because I don't want to be implicated, although I wish I had gone for team leader earlier before I knew all this as I practically do the job anyway just with out the title.
Your job sounds very varied that's for sure! It's a tricky decision about whether or not to leave. Do you see it through and get the experience or be 'bold' and quit knowing it's not for you? This is only my opinion, but a year isn't that long when you consider you'll be working for 40 years or so and you don't have to accept the long term position afterwards. Also, looking at your CV I don't feel it would look good detailing this internship then saying you quit to do a basic retail job.
Personally, I've LOST confidence doing my job. Yes, my customer service has improved (I was a bit shy) and I think I'm a very good worker but knowing that I could be doing better gets me down especially when you're on your hands and knees cleaning up pepsi that a bratty kid has spilt! I always feel embarrassed to tell a fellow graduate I'm 'just' a waitress at the moment. Do you think you could put up with the job for a bit longer if your social life was better? Also, a suggestion might be to do a retail/waitressing job one day of the weekend if you could manage it, especially coming up to Christmas as there are a lot of jobs going. That way you might meet more like-minded people to you.
Please don't feel guilty though, it's obviously making you unhappy. It's easy for me to say "just carry on with it" because I'd love to get out of my job but I perfectly understand. My uni friend I mentioned followed the Psychology route (the course we studied) and worked in a prison, an organisation that helps to employ people with mental health issues, and now a psych ward in London. I'm so proud of how far she's gone but even though it sounds a rewarding job to do, but it's not and she's unhappy too. She's considering her options too.
Houseshares don't have to be relaxed btw, I just said that because it's what I prefer. If you go on the adverts on spareroom, some of them ask for a social housemate to go out for a few drinks etc, and others ask for the 'tidy, quiet' type. I'm sure you could find a house for you. If you want a more lively one, look at bigger houseshares or even student ones if you wanted the bustle.