Folding chairs are available in the UNI Dome.  Unfortunately, there are only a limited number of tables and they are all used for registration, impound, repair table, vendors, etc.  You can bring your own table.  The light weight fiberglass tables work very well and are inexpensive.  You can also bring an aircraft storage rack.  A couple of examples are shown here including one by a creative free-flight pilot that's just a folding clothes rack.  120V AC power is available in all the pit areas.

[Rhetorical question - Does a free-flight aircraft

have a "pilot" or just a "launcher"?]

Because it's sometimes windy outside the UNI Dome, we recommend that you pack your aircraft in some type of protective container, similar to the ones shown here, to transport them in and out of the building.  (Foam is good for more things than just building airplanes!)