MBA does not guarantee a promotion or pay rise. You need to really think why you want an MBA.

If I can make a choice again, I will not go for MBA but rather professional qualification.

If you really make up your mind to proceed with MBA, choose the school wisely and get to know their Lecturer teaching method and qualification. I am studying now in a local Uni and in my 3rd semester now and so far finished about 10 subjects. Out of 10 lecturers, only 3 are really keep up to business environment changes and know what they are teaching and you can really apply what they tot into real practical world.

In addition, dealing with the Uni admin staff is another headache and challenging part and their way of doing things is just like typical government agencies.

The way my Uni conduct the MBA is nothing difference from undergraduate, I am not sure about others but I would encourage you choose the Uni wisely before jumping into decision.