Hi, Interview in Vientiane, the email says from 9:30 to 10:00.

Is that my slot? what happens if I go before? Maybe they let me in if there are few people or need to wait my time?

Also if it's very busy and can not enter at that time I need to go again the next day?

How it works? You go there and they give you like a number and call you?

On Jan 7th I've extended my marriage visa online. The next appointment is Apr 9th. I guess it's too late to apply online (as I've just discovered it should be done 15-7 days in advance). I've assumed I've missed the online date, so I need to visit the Immigration personally. Is that correct please? If yes, is it better to come before 9th or should I come on 9th precisely?