The revels were before, during, and after the Maypole thing. A Maypole is the reason for the failure of Thomas Morton's Merrymount colony:

"The inhabitants of Merrymount ... did devise amongst themselves to have ... Revels, and merriment after the old English custom ... & therefore brewed a barrell of excellent beer, & provided a case of bottles to be spent, with other good cheer, for all comers of that day. And upon Mayday they brought the Maypole to the place appointed, with drums, guns, pistols, and other fitting instruments, for that purpose; and there erected it with the help of Savages, that came thither of purpose to see the manner of our Revels. A goodly pine tree of 80 foot long, was reared up, with a pair of buckshorns nailed on, somewhat near unto the top of it; where it stood as a fair sea mark for directions, how to find out the way to mine Host of Ma-re Mount."

The next year the Puritans attacks, arrested Morton, and chopped down the Maypole. Good story; look it up.