Next day delivery is likely if you move quickly and I KNOW that USB tethering is possible. It even states it in the manual. Now if you buy some no-name generic it might be incapable. But this is a Brand name MiFi. ZTE MF971 made to TRUE's specification.
Follow up with the vendor to double check if you wish, whilst you are looking at other options. Always good to have a fall-back position.
Bangkok-Pattaya buses also act as couriers. Even same delivery is possible.
I wasn't referring to 5G, 4G, 3G or whatever, but the specific bands. if there is only 1800 MHz UMTS or LTE in a particular location, but the phone doesn't support it, then that phone is useless in that scenario. So you want a phone that covers ALL possible frequencies there. 5G/4G/3G is not a frequency.
Chances are that it will, but don't just assume.
But it seems you have your mind made up to find an Android phone. Good luck with your endeavour.