I went last year and it was OK.
if you want something to do and have a mooch around the museum its free.
Quite a few bikes there and there's food in the railway carriages too
http://www.eastlancsrailway.org.uk/events-activities/2017/4/classic-bike-rally.aspx
lassic Bike Rally - Easter Sunday 16th April 2017 - 10am till 4pm
Bury Transport Museum
Castlecroft Road, off Bolton Street
Bury
BL9 0LN