What are the different types of 'fan day' and how much does each affect attendance ?

For a change, not moan

Just interested to know what the different types of fan day there are that people have experienced and how much each one affects attendance for that day.

I have seen at least 3.

' Local residents can apply for free tickets ' (had this just now) = roughly 50% extra attendance (figure based on my av of 2.2 in tier 7, but 3354 for that fan day)

' Buy one get another half price (or children get in for half price) ' ?? or something like that (from a now abandoned save) = was roughly 20% extra attendance (again based on tier 7 of 2.2 and attendance of 2.6).

Fan day doesn't seem to take notice of the opposition's rep, or the current lg position of that team as regards the attendance for the match (or indeed for any match). Which imo is maybe an area that could be improved.

Irl 1st v 2nd etc should and would generate greater attendances since titles etc are up for grabs from such positions, especially from the 2nd half of the season onwards.