Honorary treatment, lavish hospitality, as in We'll have to get out the red carpet for the President's visit. This term comes from the literal practice of rolling out a carpet to welcome a royal or other esteemed guest, and indeed is often put as
roll out the red carpet. [Early 1900s]
See red carpet in WNW Idioms
roll out the red carpet (for)
to welcome and entertain in a grand and impressive style
See red carpet in American Heritage Dictionary 4 Idioms