u/peaswees

Hi, I am travelling with my spouse and two kids. We will land in Bangkok and from there which destination should we go to first from Phuket, Krabi and Koh Samui?
I really want to do Koh Samui for the resorts. Phuket is a major tourist destination so I am thinking we should do it, should we?
All the boat tours we can from Krabi, but then what is there to do in Phuket?
The kids are 4 and 7 years old. We are no interested in night life or OVERLY crowded areas. We do like happening areas. We are going to Safari World in Bangkok and other kids place.
What do we do in Phuket?

How long should we stay in each place, how should we travel between places? Should we visit them in a specific order?
Thank you