I'd say do the "r" .. do it the right way..
In the past it used to be only people from the countryside who spoke central dialect with a strong accent. Now sloppy people picked it up and it has become common that a lot of people just opted for the L..
It's my pet peeve that they pronounce Thai that way..
Thai people wouldn't care much when a Thai person pronounce it that way but being a foreigner speaking with the L where it should be an R, people most likely will make an assumption that you've learned your Thai from the wrong crowd.. Ironically we don't think much about Thai people doing the same thing.. Double standard or what..
My performances were great. Full house on both days we did on last Thursday and Friday. We even had to add a lot more extra chairs to seat all those people. Was a blast and some of the best shows ever!
Intense preparation but it all paid off.