Good afternoon !
Asking for some advise for a "non social media" buddy.
BACKGROUND
Visa OA Multi Entry| Issued Canberra Australia | Valid 27 Dec 2018 through 26 Dec 2019 | Entered Thailand 28 Jan 2019 and stamped in to 27 Jan 2020
QUESTIONS
If she leaves Thailand and re-enters before 26 Dec 2019 will she be stamped in for a year?
Is there any difference between re-entering via land or air border?
If she does get stamped in for another year (eg re-enters Thailand on 20 Dec 2019 and gets stamped in to 19 Dec 2020) and she then leaves Thailand in March 2020 and wants to re-enter the same month, will she need a re-entry permit to keep her stay valid to 20 Dec 2020 or does that exit and re-entry mean she has to re-enter on visa exempt for 30 days only and effectively invalidate the stamp until 19 Dec 2010.
Thanks guys - look forward to hearing from you