you are overcomplicating the matter. He can open an account in Pattaya, and re-register this account at the bank branch where he lives under his local adress. Why do you insist that this is not possible? Thousands of expats have moved within Thailand and changed their bank branches to their new locations
if your friends register you properly under the TM30 system, you can get a "certificate of residence" from Immigration for their adress. With this you will be able to get a bank account opened in Pattaya. Alternatively use an agent, it takes only one day
the advantage being on a Pattaya adress is, in Pattaya there are a multitude of agents who can legally open a bank account for you on a Non-Imm-O Retirement visa. This service usually costs between 5000 and 7000 Baht. If you try it by yourself, you will most probably get turned down by the majority of the banks, some will make you contract an accident insurance as the prerequisite, others will simply tell you "not possible". If you want to streamline the process, use an agent
in the place where you live, you just visit the bank and show them your "certificate of residence" from Immigration. They will register any account you opened in Pattaya under this adress. They will be your main bank branch from then on
Max, you like to overcomplicate things. He won't have any problems with the Kbank in his area, he can move the "main branch" to where he lives after having opened the account on a Pattaya adress. I opened my SCB account in Hua Hin and now my SCB branch is Sisaket where I obtain the bank letter of guarantee for Immigration
he will soon find out that he is following a dream - instead of proper advice 😉 . . .the only reason I do not rhyme in, is because this thread already is a train wreck
who makes you think that you can add an unmarried "care" partner on a dependent visa ? You seem to not have done your homework. Well I reckon you best visit an agent in Thailand, pay some hefty money and see how far it gets you