If it not work online, and you go in person to do your 90 days report, make sure you have some kind of proof that you where there on that day (I usually make pic from queue ticket and passport). If they not change it in their system, it can give you problems, I spend 2 years ago an hour searching my report, after telling them on what day i was there. Not so good working immigration office over here
it was before the year before also next day pick up, guess they did that only for a short time. Liked to visit that consulat, easy going and good service
Went last time to savannakhet in 2014, drop of in morning, pick up same day afternoon after 14hr. Same day back in Thailand. Was non immigrant o, marriage
Same in kanchanaburi, only accept you in the last week before stamp expire. And the next visit, wich they give you the date, is always one month, but then they let you come back the next day because bkk is not ready with your papers ...
I laughed with her, after 10 years of extensions i was pretty sure what they needed, so I asked her if she go give me a 10 years extension if i was right ... some other officer finnished my case. It wasn't the first time they act like that over there, few years back, after a new visa, they go come for a house visit, they called me an hour before saying that they come with 3 officers, using their private car, if i would be so friendly to prepare 3 envelopes with some 'gas money'
In kanchanaburi immigration, they want the affidavit from the embassy stating that you have the monthly income and a statement from the bank from the last three months. When i did my last extension they even ignored my whole file, saying that i need the letter from the bank saying that i have 400,000 on my account. Always something on immigration in kanchanaburi