Bangkok Red Light Districts
Pattaya Red Light District
Visa Run to Cambodia. Travel by van to the Thai immigration facilities is at Rongklua Market in Aranyaprathet. If your on a tourist visa and need to renew your visa then one of the easiest and cheapest ways is by mini van 230 Baht one way departing hourly from Ekkamai.
Ask for a ticket to the Rongklua Market Aranyaprathet. The latest you want to leave is 11 am this will give you enough time to renew your visa. It takes around 3½ hours they stop for about 20 mins to refuel. If you need get the Skytrain then get off at the Ekkamai BTS and walk 100M to the nearby bus terminal.
Get your Cambodian tourist visa 1000 Baht / 30 USD at the official Cambodian office. Then go to the Cambodian Immigration where you can exit into Cambodia or get your entry stamp into Cambodia.
Visa Run to Malaysia. Travel to Don Mueang International Airport. You can fly return to Kuala Lumpur from around 2500 Baht dependant on the season.
If you plan on doing a quick turnaround then you will still need spend at least 4 hours at the airport. Luckily the Kuala Lumpur Airport is large therefore you can pass the time easily.