Possible Clues:

• What a compact often lacks
• Space often lacking on a plane!
• In which to stretch the French man about to be married
• Lounge, perhaps, after stage, which airline passengers need
• Space to stretch
• Franglais speaker at wedding needs this for footsie
• * It's not French for "husband-to-be"
• Space needed to avoid cramped position
• Ignoring the odds older man getting married in space
• First-class perk