The last time I was on the Megabus, I rode back to Pittsburgh from NYC in January...without heat. Needless to say, I didn't have very high expectations for our 3 1/2 hour ride to Cardiff.
As my friends and I walked out of the station to the bus...we thought it was a mistake since we assumed we would be on a regular old Megabus. On the side it said 'MEGABUS GOLD' in huge letters. Inside, there were nice leather seats surrounding a table with tons of leg room. Before taking a nap, a worker came around with chilled apple juice and granola bars for us to enjoy...it was divine :)
After our naps, we woke up to homemade shortbread and then after about an hour or so we arrived in Cardiff, close to the city center.
On the way back we were not so lucky and had a normal Megabus...but it was only 8 pounds, each, round trip so not bad!