I talked to the waiter and apparently what they do is that they don't only use rice flour, but a small amount of wheat flour as well (do give the bread better properties). Not sure what amout of gluten that actually is, but decided not to risk it.
They however did have one pastry which was completely gluten free, so I decided to have it and it was delicious :)
— Yes, the establishment is dedicated gluten-free
— Excellent