My sister, a pioneer for over forty years, speaks another language , not just fluently, but very very well, several native speakers of the languge have told me she speaks it better than them !
She told me that , and remember she never says anything against the WT, the language teaching done by the WT is superficial, enough to preach a bit and stuff some literature in to someones hand, but not good enough if you want to hold down a job say, in that country.
The poster who was going back to learn a language was wasting his/her time.