No problem with going alone, just be careful after about 2am for the ladyboys on the back of scooter's cruising for drunk farangs. If you bother to make eye-contact or worst dialogue with them, you are fucked. They will try to entice you into a laneway for a BJ. If you are too silly and fall for this, next thing your wallet is gone while staring at the reflection of a switch-blade or small hand gun. Otherwise with reasonable care you should have a great time and be made to feel like a king by the beautiful thai girls.