I write my reviews, good, bad or indifferent within a few days of the punt, regardless of whether I intend to see them again.
I'm rather wary of those reviews that are from "a few months ago" and then go into great detail. Either the punter has a good memory, makes notes or is embellishing their reviews in my opinion.
Ron89: as a London punter I don't know your reviews are genuine in as much the same way you don't mine.