Checking in from SC, USA. There are Spanish speaking congs. here - and they ARE growing fast. For the most part, they're the 1st & 2nd generation migration workers.
This is just MY opinion........but I think they're like other cultures & women in general - they want to fit in, be accepted, yada yada.......and looking for stability & acceptance. The WTBTS in theory gives them this.
When they & particularily their children have more access to college, internet, etc......then I believe their growth will dwindle just like other industrial countries/cultures.
As for friendliness? I would think that would vary with who they accept & just KH personality.
waiting