You can have opportunities to have fun with Japanese girls even if you do not understand Japanese very much.

Probably a lot of foreigners think speaking Japanese is a must to hang out with Japanese girls. 

I thought I could not get a chance until my Japanese was improved enough for smooth conversation when I visited Japan for the first time.

As a result, I could have an opportunity to hang out with Japanese girls before I mastered Japanese enough.
I called in a foreigner friendly delivery health, the customer service answered in English. I could book though I do not understand Japanese.
Thus, I think you do not need to give up adult entertainment with Japanese girls.

The escort girl could speak English. She talked to me in English when she explained things like the service.
But she moaned in Japanese when I pet her body. I was pleased to think she had such a big ecstasy that she could not care language.