Possible Clues:

• and 12 across , from Holland, from Holland? I don't get that at all
• Designed for two users
• A drink is maybe what the darts-player needs
• Twice - bent over - run
• - - -u, (w)
• One is not paid twice as much as the star!
• Not one to run
• Ringer - large drink
• Do get a mixture of blue more than once
• Stiff drink