I saw this and thought maybe you were leaving our country, since you hate it so !
Anyway, look in your confirmation email, there may be a link to "print your boarding pass", assuming a flag hasn't come up at the time of purchase saying that. It's been about 3 years since I've flown Southwest though, so things may have changed ( we went the other way, flew out of RI headed out west to spread my Father-In-Law's ashes over Mt Rose in NV. Then back again about 4 days later)..
Speaking of which, what a shocker. After flying in and out of airports on 737's, feeling that acceleration down the runways and roaring up to 37,000 ft to cruising altitude. Then get in a little Cessna 172 with three people on board and a box of ashes, taking off out of Carson City airport already at 5,000 ft. to climb to 9,000 ft. and having the pilot tell you "well I know we will make it over the mountain cause I see the lake on the other side" ! That silly engine putting away out there sounding like a weak little 1960's Volkswagen bug and the plane barely moving, it felt like it was going to choke out and fall out of the sky ! I didn't even know a Cessna could fly to 9,000 ft. Got some cool cell phone shots up there though.
You know how you spread ashes over a mountain when flying at 9,000 ft? You open the door and shove a long necked funnel outside and start pouring in the ashes, the wind velocity at the end of the funnel sucks them right out. Kind of cool, leaves a haze behind the plane. Cost to rent the plane and pilot, $700 for two people to fly up there ( came out of the estate, if I was paying we would have driven up the mountain road by car for about $5 in gas, dumped the ashes on his favorite ski slope and gone home $695 to the better).