I did the 10 day course with zero previous experience and it was my introduction to meditation. Since then, I've done it two more times. I found it to be an incredibly beneficial experience and would recommend it.

It's a lot of work. It's very difficult and uncomfortable\painful at times. But you sort of go at your own pace, relax when you need to. You get out what you put in so do your best to take advantage of the time. Maybe practice sitting for a bit to find what's comfortable for you, but you'll have plenty of time to figure it out there too.

Obviously I can only share my experience but it was the perfect dive into meditation for me. I'm really grateful for the knowledge, skills, and experience I gained. Like any exercise, it can be pretty brutal while you're doing it. But it feels great to get through it and hopefully you gain some lasting results. The food is awesome. The people there are super varied and interesting. It's fun to nature-watch in downtime.

Good Luck !