it’s true that most of the girls are regular fine religious girls. a lot of the girls ARE modern, but have regular hashkofos. i guess maybe it’s not so true that you could get affected. it really depends on the type that you are. about music many girls lose their sensitivity to the kind of music they usually wouldn’t listen to. like if you usually don’t listen to non jewish music youre gonna lose your sense of what is ok or not (jewish to non jewish)thats one thing you have to tolerate in camp cuz thats the kind of music they use for the camp. overall i dont think its so bad, if you want to spend your summer in a fun, meaningful way then it may be worth it to give it a try
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