Holders of the Marquis Jet Card will have new restrictions that will require they book flights farther in advance during peak travel times. Also, starting June 1, cards must be purchased 60 days in advance of a peak travel period to fly during that period. Card holders will also no longer be guaranteed their subscribed airplane model, but only one in its size group during peak travel days. Marquis flights are operated by NetJets or NetJets-approved charter operators under their respective FAR Part 135 certificates.