Make your way to the Lat Phrao MRT station, and leave by exit-1.

Turn left after the exit and walk to the corner of Soi 26. 

There is a 7-eleven at the corner before turning left. 

Walk about 300 meters down Soi 26 and you will find the MUD restaurant. 

The On-On will be held in the restaurant car-park, as per arrangements with the restaurant.