I've been to Vegas 16 times, trip 17 coming up. I've also flown several other times to other locations, but I've only ever flown coach, more often than not on Southwest (though sometimes Alaska). While we don't mind splurging on hotels and food and entertainment for some reason flights we always try to do cheaply. For my upcoming trip we decided to splurge (its my birthday weekend) we booked first class round trip. I know its not THAT much different, and to some not a big deal but I'm still excited. We only have a short flight from Washington (about 2.5 hours), so its just never really been worth the extra cost. But this time we decided what the heck, why not. We are flying Delta this time. For those who fly first class often- any tips? We get to use special (shorter) lines at the airport and all that fun stuff, right? Does this just apply to check in, or security also?