Wedding furniture

If you're using a bare bones venue, yes.  If you look into typical wedding venues (i.e., Chateau Briand, Jericho Terrace, Sandcastle Caterers, etc.) then everything is included.

Also, if you want something extra special (like a grand sweetheart table), then yes look into an event furniture rental company.  If you hire an event planner they'll take care of all that stuff for you (with a fee of course).