Absolutely! Plan to arrive 20 minutes before concert time, so you can find your seat, turn off your cell phone, take a look at your surroundings, absorb the atmosphere, and have time to glance through the program book, too. You won’t be alone. Many concertgoers make a point of coming early to read the program notes, watch the orchestra warm up, attend the pre-concert talk (7:15), listen to music in the lobby, or just enjoy the lobby concessions and talk with friends.
Rushing to your seat at the last minute doesn’t really give you enough time to get settled, so you may not fully enjoy the first piece on the program. And there’s another good reason to come early: Most concerts start on time. If you’re late, you may end up listening from the lobby! If that happens, the usher will allow you inside during a suitable pause in the program, so your arrival won’t disturb other concertgoers.