I've been to a lot of tournaments during my time in FLL, and nothing much is guaranteed in a judging room.  It depends on the location and even the particular room  There's usually at least one chair and a flat surface for the team to use, but maybe your team will be in a room where desks are bolted to the floor and cannot be moved.  Sometimes there are integrated desk-chair combinations, and your team is expecting a loose  chair without a writing surface.  Sometimes teams are looking for a specific set of furniture to use for a project presentation, and have to make do with what is available.

There's nothing that says that a poster has to be on the floor even if there isn't a table available.  Give it to your team as a discussion topic, and let them brainstorm.  Then they'll be more prepared and adaptable to unexpected situations in the judging room.

On a related topic, have your team review the Project judging rubric and the Presentation category.  No matter which judges they are speaking with. can the team be clear and organized, and still be creative and engaging? That's a challenge that FLL participants sometimes have more skill at than we adults.

Steve S.