Since you asked...
It has some semblance of plot, sequence, resolution, which is all a great start. No shortage of thorough tickling and other sexy things. You let us know you were going to explore other fetishes, which you obviously did. I'm guessing this story would be most appreciated by the audience that shares them.
(If any fetishistic material which is particularly disparate from what you'd normally find in a tickling story is included, I generally appreciate some kind of disclaimer so I know what to expect.)
People generally seem to have mixed opinions about phonetically transcribed laughter. I generally take it as a stylistic choice; I understand what people are getting at when they use it.
If I could have more of anything, it would probably be insight into the minds of either the ticklers, or Allison; what they're feeling. If I didn't understand what a tickling fetish was, I don't know if I would have understood that the story was supposed to be erotic.
There are a few typos and odd capitalizations in there, too. Considering that's one of my main comments, though, that's really not bad. Keep it up...