I honestly find it beneficial anyway, as I can exchange my money at more opportune moment than when I am in a pinch at the nearest ATM and hope the exchange rate isn't terrible.
There are some fees with using the service, but I honestly prefer those over going to the ATM on a bad day and getting hit with a terrible exchange rate.
And if you are lucky to have a Thai account or a friend with a Thai account you trust you can send to, it's absolutely brilliant.
If you left the country and came back, or stayed at another place who registered a different TM30 than where you normally live, you will need your landlord to file another TM30.