It depends on your condo. Some have an exclusive contract. Best way around this is to use AIS 200 bhat a month unlimited on your phone for video calls and the AIS 4G pocket wifi that cost 2345 bhat in total - you keep it for 12 months for everything else. Otherwise, you need True for like 700 bhat a month for faster speeds with full router and wifi to handle video calls and online gaming.
What is your job title? If you don't have a job that has a translated word in Thai then there will be problems and delays. But if you have a job like engineer or something you should be fine. You have to take a lot of photos of you and your wife outside your residence with the address showing and you on your bed together and in each room of the house etc. You should consult with a professional and NOT Facebook for legal advice.