In 7 years of running IFPA events I dont know of a single time that anyone has shown up due to that.
OP was originally assuming there was a potential promotional benefit from being IFPA. The only benefit is IF your players are interested in the points or people hunt it out because they are interested in the IFPA points. This is entirely the case in some areas or will become the case after people play and get in to the point aspect.
Fair warning that the people that attracts may turn off some of your current more casual players.
I actually like that IFPA provides the option for opt-in. You currently have the ability to only report and pay the $1 for each player that opts to do so. If your player base does not care about points then they dont have to pay or be reported; or if only 1 person shows up that is concerned about them you can just have them pay the buck and only report them (granted they will win every time in the eyes of the ifpa)