Related Clues:

• MasterCard alternative
• See 53-Across
• Traveler's need, perhaps
• Traveler's O.K.
• You can get a charge out of it
• Permission to go
• Big name in plastic
• Entry requirement, at times
• Traveler's need, maybe
• Payment option
• Permit
• Through
• Big name in plastic?
• Best conditions
• Ideals