If you show up early, you are the first group let on along with the Platinum CC members.
For me the extra money was worth it for having a relative private area to hang out, CC lounge and private sun deck. I'm not a fan of huge crowds.
Also since I booked so late it was great that I could get on some of close bookings. The happy hours are a saving on your drink budget. There are more benefits if you search other threads too.