It is possible to open a bank account if you are switching from a non-Non, O, or NON B visa to another type of visa. You can open a bank account with these types of visas, but not in other cases, since the DTV visa is classified as a tourist visa.
It's unclear who you booked the service through. Fast Track offers two types of service: one is a skip-the-line option, but all documents and necessary requirements are checked. Another option is a VIP service, where you are met and escorted through without any questions.
If you have not left Thailand, you can submit the second report online, as well as subsequent reports, and you have not changed your place of residence.
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