Koh Larn is a beautiful island just off of Pattaya. With minimal time to travel with training and fighting, Koh Larn is an excellent choice as Pattaya is not very far away from Bangkok and is very easy to get to. Pattaya itself is just alright for tourist purposes, in my opinion. Many call Pattaya the Las Vegas of Thailand due to many people making their way here to engage in the sex scene. Like with almost any place, you can find the “bad” stuff if you go looking for it. I’ve seen some nice areas that are quiet and suitable to raise a family, and I have also seen older farang men on the street with girls who look no older than 16. There are also a few good Muay Thai gyms there if you feel like staying a few days to train. Anyway, point is, to get to Koh Larn, you have to make your way to Pattaya first. As with all day trips, the earlier you go, the better, so you can take your time exploring and not have to worry too much about traffic going there.