In-person conferences

What about accommodation?

Accommodation is not included in conference fees, except in rare and exceptional cases. In most cases, the main conference venue is a hotel that will accommodate the majority of conference attendees - the organizers may have a deal with the conference hotel, offering hotel rooms for participants at a discounted rate, but that is not always the case.
Conference attendees will need to make their own booking and payment arrangements with the hotel of their choice.
In most cases, organizers provide a list of hotels (all prices ranges) near the conference venue, through the conference page and/or the conference forum. In all cases please consult the relevant conference page.