Browse+Stream for video calling

New to the sub, there are probably lots of wifi questions but they’re outdated.

I am buying the browse + stream for my europa cruise in February, has people had any troubles recently on their cruises for FaceTiming or using calling apps like discord? Will I be able to call properly without sounding like I’m a robot?

Also is there a limit on the wifi? Will I be able to call all day if I wanted to lol thank you!