. Give your son and his friend your home adress before they arrive, on the very remote chance they are asked at passport control. On my first ever visit to Thailand on visa exempt I was asked for it because I didn't have hotel details and was staying with a relative working here. This was a long time ago and once I provided the adress it was fine.
. Might pay to do some background research on your sponsor first. I've heard many stories of the "guaranteed work placement" not coming to fruition once study is finished. It's been used as a marketing tool for "schools" here to get quotas. Ask for proof and or examples. If they hedge, I would be wary. Same scheme has been used here for internships, which is unpaid work in the future.
. If you bothered to read before replying.. I've been living here 6 years on appropriate visa and extension of it. That's why immigration is never an issue for me when re entering. You've got a lot to say, seeing how many questions you've posted and had answered in this group.over the last 2 years.
I don't give a fuck what means someone uses to stay here long term, just don't moan when it turns to shit because imm officers eventually deny you entry for not using correct visa.
Kasikorn Bank has a phone app, you can pay internet ,phone and power bills directly with your phone from your kbank account. Will need to request it and have it activated at your branch after downloading it.
You can maybe get a 60 day' visit family' extension to bridge the gap between your current visa and getting your yearly extension. I've done it myself . It's only available once per visa. But you may need the kor ror 22 for that. I didnt because I was married here . Kr22 is for marriages registered outside Thailand. You could get re married here to solve that problem but you will need an amphur for that.and technically it's supposed to be the one your wife is registered to .