landing in Bkk the walk depends on the gate and if its S1 can be from few minutes walk to 15 minutes walk to immigration. Then domestic is 5 minutes walk from immigration
If your transit then you just go to gate for phuket. If you booked a domestic to Phuket then you go through immigration at bkk grab your bags and go to domestic.
Hopefully your on one ticket with Thai airways and your bags go direct you go to new gate and do immigration in Phuket.
where does it say you reached your limit ?I read max a bag can weigh is 32kg i dont read anywhere it says you can not take 6 or 7 bags of 23kg or more bags. Can you explain to me as I want to learn