Abou Andre, "Y" the error?

Abou Andre has a riddle, the idea is that they opened in Ghazir with an ad. Well, there's a catch, the ad has a mistake, find it and win an invite for four. Not to spoil it for you but this reminded me of this sign I found at the Syrian National Museum in 2007.

Please no enter. Which someone correct to Please no enterY, and someone later correct Please DO noT enter which someone correct to Please DO not enterY. The last two corrections are debatable in terms of sequence. But the idea of the "Y" added was interesting enough.

A full circle back to Abou Andre. Wink wink.