book your appointment time a few days in advanced and then bring all the required paper work. When your appointment time starts you can approach the counter and tell them you have appointment time and show your appointment notification that you got in your email. They will take you almost straight away jumping any queue that is sitting waiting
I typically red line train to IT Square then cross the road from IT square and walk about 100 metres towards immigration where I would catch the first motorcycle taxi stand on the road that immigration is on
I read a similar discussion recently… someone else may have more info on it. If the kids will go to a school then 1 kid can have 1 legal guardian visa for a parent. I guess that means if you put your kids into a private school you both may be entitled to apply for guardian visas.
some airlines don't want to take the risk that someone may get turned away from the border for not having an onward flight within the 30 day visa exempt period (or that of one's visa if short term). This can happen at the airline's expense which is why they can be rather strict about onward flight requirements for someone about to embark on a long distance flight.