Surendhar Mudaliar Photography:
sorry, didn’t see your reply/question, so not sure if it’s too late to be useful? my guess is that the tamron will be fine for shooting weddings and events as long it is not having to make lots of big jumps in focus e.g. from minimum focus distance to infinity, it’s these bigger jumps where I think the Nikkor 2.8 lenses seem a lot faster, and the tamron a tad slow.