I've been to the El Rey Theatre many times - I really enjoy the venue for seeing concerts in a more intimate setting - capacity is less than 1000.
When you arrive, they have valet parking, which is very convenient for the Wilshire area. Â You can also find some available parking structures and street parking as well.
The art deco theatre has a main floor level, and a second floor balcony area. Â Most of the concerts are usually configured as general admission standing room. Â There is a slightly elevated area on the sides, sometimes roped off for VIP. Â If it's not, it can be a good place to stand for a better view, if you're standing farther back. Â I understand that watching concerts from upstairs provides a good vantage point as well, though I've never personally watched from there. Â The sound has been good at the venue, Â They have a merch area toward the back of the theatre, so that it is out of the way.
They have hosted a wide range of acts, and it is also available for private events. Enjoy the show!