That looks very interesting but I have to be honest I would have trouble with waking up at 4 am for ten days, and sleeping with strangers in one big room-even of the same sex.
I wonder is it possible to bring your own tent and sleep in that instead? I saw pictures of people doing that I though? I am very interested in trying a retreat though. I think it would be a great experience and needed knowledge. It's pretty amazing they cover all your expenses while there so even broke people like me can maybe go
Most centers should provide single rooms ideally n single cell pagoda for meditation...I did a few courses, n they all had single n 2 per room accommodation...Am 100 % sure they will provide single room if u tell them your situation .....Also very important to talk to the teacher exactly what you are going through now... Taking medication if I was highly anxious was useful in the beginning.its difficult but not impossible, I used to meditate alone when I was anxious... That helps if u r scared of company...Only 3 group sittings, others u can manage in cell/room and walking too. Doing in a relaxed way was the key to me.feel free to ask me anything about this.
I would wake up at 1 am n work my bones off if someone was giving me the tools to come out of suffering, wouldn't you? Please work hard, this has shown good results for me n millions of others...Put aside doubts... Give it a try...If you fail, nothing to lose..
Learn to meditate. It changes everything. I can proudly say I'm a semi-relaxed person now haha. Just be consistent with it. You can take a class online (hackself.org) or in person (tm, etc.). 10 mins a day and I feel a looot calmer.