Possible Clues:

• Person running eating house
• Ramsay is one taking break with influential film director outside art institution
• Ramsay, perhaps rues art at cooking -- regret coming back?
• Regret returning after training a true star as chef, perhaps
• Owner of place with good cheer?
• Gives 9 across to hungry type and doesn't want feedback presumably
• One of those doing something with 27 across on the side works for the consumers
• Proprietor of an eating establishment
• Could have prepared 18 across, as one will have to put food on the table
• Owner of eating place