There are three bars in Pasadena that should meet all your needs.
The first is Wokano--open until four on the weekends, and two weekdays. A loud, thumpin' bar with music and three different areas--the awning-covered, brick-walled patio for large groups, the rockin' back bar for meeting and mingling, and the front restaurant for food and cozy romance. Young or old, it is good for what ails you.
The upscale bar, Delaney's Club 41 is straight out of Nero Wolfe. Dark wood, leather, small and very New York. You can wear a jacket and tie here, and feel like old Pasadena.
The third bar is the kind where "everybody knows your name." The only real seating is actually at the bar, unless you go for their comfort food. It's the original Barney's Ltd. in Pasadena, not the upstart Beanery from across town. Here, you really can become a regular, and the food is very good. I've been going here for 28 years.
[There are other good bars in Pasadena, but if you want a real mojito, go to the Cuban Bistro on Main Street in Alhambra. Carrumba.]