Possible Clues:

• That's when 10 across has a ball in plenty
• On a roll, take steps to achieve wealth
• Bountiful bakers' ball
• Plenty for the bakers' ball?
• Plenty of successful tricks
• A cakewalk is more than enough
• Plenty, but it isn't a cake-walk!
• *Twerking?
• It's more than enough to have a ball with rock and roll without the rock
• One's had more than enough of the bakers' ball