Look for a tour team (with a few friends) in July

Hi Joyers.
We are couples. We were planning to take a weekend to travel to Rostock on 22 July, but unfortunately our friend cannot attend due to some reason. I'll be glad to join some tour teams and we can act and have fun together.
I think go climbing, camping in tourism or any other ideas are all fine with us, because we have 9 Euro pass .
Hope to disscuss and join you!
Best