Originally Posted by
flightrisk
The curtain is after the last row in J. On my flight it was drawn sometime after dinner service, leaving only the one front lav easily accessible in J. Seemed kind of odd.
You can still go to the lavs behind business class, even if there is a curtain. I doubt FAs will say anything.
Plus it’s allowed to use the bathroom in any cabin on all domestic flights and flights from the US.