is Platinum Preferred worth it on us airways

Skip the line and check in at designated Preferred ticket counters. In airports where none are available, check in at one of our First Class counters (within the U.S. or to Bermuda, Canada, Latin America and the Caribbean) or at our Envoy Class counters for travel to/from Europe, South America and the Middle East. And if you're traveling on one of our Star Alliance partners, go ahead and use the Star Alliance Gold check-in counter.
us airways Platinum Preferred card member Enjoy special privileges when travel on any participating Star Alliance airlines. Just present your Dividend Miles Platinum Preferred membership card and same-day international ticket to access the US Airways Club and more than 600 Star Alliance lounges.
Get to your seat faster, too. Platinum Preferred members board US Airways operated flights with Zone 1.
Sail through security at the airport and get to your gate even faster. Just show your Platinum Preferred card, a valid form of I.D. and your boarding pass at our Priority Security Lanes at participating airports. You can even bring your travel companions along with you.
Priority boarding is not provided at all airports, by all airlines.
Travel in First Class. If an upgrade becomes available, we'll automatically upgrade you and a companion to First Class (when traveling in the same reservation). Complimentary upgrades may be awarded up to 4 days in advance.
free upgrades are subject to capacity controls and exclude travel to/from Hawaii, Europe, South America and the Middle East. Full-fare (Y or B class) economy tickets may be upgraded anytime after ticketing and include Hawaii. Complimentary domestic upgrades are subject to capacity controls and may be awarded up to 4 days in advance. Companions must be booked in the same reservation and be processed at the same time as the Preferred member.
You and everyone in your reservation are exempt from the first, second and third bag fees (group reservations not included).
Your bags will be loaded last which means they'll be among the first on the conveyer belt at your destination.
Allowances vary by airline, so please contact the airline you'll be traveling on for details.