Anybody been to Khao Yai about 3 hours drive away from Bangkok? Nice place to bring your children ? Any nice accommodation to recommend there and activities to do n place to visit there?

I highly recommend doing activities at the Khao Yai National Park. It's simply gorgeous and a perfect place to bring city kids to appreciate nature. Me and my friends booked activities (trekking, camping) with the tour company Khao Yai and Beyond (Khaoyaiandbeyond.com). You can take your kids horseback riding and or on jungle tours. Getting to witness elephants, monkeys, wildcats and other awesome creatures in their natural habitat is mind blowing and I'm sure your kids will love it! Accommodation wise, we stayed in Patravana Resort Khaoyai. We didn't spend much time in the rooms but they were nonetheless huge and spacious, with free wifi and breakfast. Booked via Agoda.com and got them for a good deal (80sgd/day).