In our 34RLSA (2013) we have the dining table (attached to the floor more or less permanently) and four chairs. With the slides in, the table and chairs are snug up against the center island and can't go anywhere. We have the tie downs but do not use them. Never any problem. While I prep the outside for departure, DW puts the recliners sideways in the back of the living room and, once again, with the slides in, no way for them to move much.
Skip & Susan Orrell
2013 34 RLSA w/ most of the options
2013 Chevy 3500HD, D/A, DRW, 4X4