Happy hour
O Bar · Midtown
Drink · Daily 4–6; Mon 4–close martinis · live · updated 2026-09-03. O Bar is at 1200 N Walker Avenue, seven stories above the Ambassador Hotel in Midtown. The FAQ page posts Happy Hour every day from 4–6pm, and Martini Monday with $10 espresso martinis and classic dirty or dry martinis every Monday from 4pm–close. Hours on that page are Monday–Sunday 4:00pm–12:00am. Happy-hour food dollars are not on the FAQ. Source: https://www.obarokc.com/faqs Source: https://www.obarokc.com/faqs
On the happy-hour menu
- Drinks
- $10 espresso, dirty, or dry martinis on Monday
- Theme
- Rooftop bar seven stories up at the Ambassador Hotel in Midtown