Answer:
A advantage of Albany Plan was that union would enforce colonies into one, transforming in a powerful unified arm for defence in wars and other important issues.
A disadvantage of Albany Plan was the individual interests, overall, around the tax collecting. They were already debating who will take this functions, which meant that union were not possible. In words of Benjamin Franklin: "The colonial assemblies and most of the people were narrowly provincial in outlook, mutually jealous, and suspicious of any central taxing authority."