I am currently in Thailand on a 60 day tourist visa (I'm American). My plan was to do a visa run to Singapore to get a second visa in December, but when I emailed the embassy there they sent me this:

"For your information, you cannot exceed your stay more than 90 days within the past 6 months as a tourist otherwise you have to stay out of the country at least 2 to 3 months before you can apply for visa again."

Is this true? This contradicts what I have heard from other people as well as my personal experience. When it says you can't be here more than 90 days "as a tourist", does that mean I'd have to reenter Thailand and just do visa on arrival? Very confusing! Especially since they require proof of onward travel, which is very difficult to plan if I don't know if I will be able to enter the country or not!