Sadly for you I would wager you're NOT going to Vientiane to apply for any visa π
BOTH Vientiane and Savannakhet will stop accepting walk in (w/appt) applications on the 20th of Dec and switch to the eVisa online system on Jan 1, 2025.
Vientiane's appt system is totally booked between now and Dec 20th so that consulate isn't an option for you to use
You CAN go to Savannakhet and apply (they have openings available) You make an appt at this website
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