April must be the most miserable time to visit Thailand. It's probably the hottest month of the year. To paraphrase Ichiro, "it's hotter than two rats fucking in a wool sock".
To cool off, you should go to the movies. Wed is 50% off at Major. Current hit movie is Pee Mak, Phra Khanong - a comedy based on the popular ghost story. It's directed by the Shutter director Banjong Pisanthanakun and features the same idiots in his 4Bia skit where [spoiler alert] the 4 guys are afraid of ghosts only to find out that they all are ghosts themselves [/spoiler alert]. Movie was merely OK, not as funny as the 4bia short.