To me, part of the fun in travelling is in spontaneously exploring things. I don't want to have to plan everything meticulously when I'm on holiday. It was day time, not a busy time of the day, and nearly all the tables were free for the whole duration of my stay. It's okay if you don't think it's a valid point of criticism, to me, it clearly is. Have a look at Tofu vegan London. Even if they're fully booked, they'll make it work. That's how business works and stays sustainable. We don't need another good vegan restaurant closing because the owners don't know how to operate a place.