Summer camp

So I joined sea cadets 3 months ago I literally just got my uniform last Sunday and they told me I’m eligible to go to summer camp in the Netherlands, I haven’t really made much friends so far or talked to anyone as I always sit out or hide in the bathrooms at stand easy since I’ve got really bad anxiety, will summer camp just be with the people in my group or will it be with other cadets from different places? And also what’s it like if anyone knows like the type of stuff you do, do you have to wake up early, do you have to wear ur uniform? Etc