1. Footfall measures dont mean much from our POV. If 1000 people attend a college tech fest, at best 200 will walk near where our stall is put up, 50-100 might come and hear us, 10 might engage in discussion(mostly to clarify doubts on their previous edit experiences), 1/0 might start editing after the day. If you say all 1000 will come and listen to us on the stall, Please attend one, you will know. If you still think college student mass attend tech fests for learning from these programs that run on tech fest, I cant help you, that's just a minority. (Any student on the list who can speak form heart on why student mass attend these events without trying to be politically correct?)

2. It is good to do a general outreach + academy for maximum 1-1.5 days, but its good to get the facts straight, especially if there is a hint of sponsoring / spending big time for these events since in all probability this has to be equally treated with any other city outreach events (In fact I would rate the latter better, since people attend those for Wikipedia as sole reason, hence may most likely have more interest)

3. This crowd (mostly Engineering students who attend these tech fests) are mostly aware about Wikipedia (Heck just go and look at college articles, people come and spam about when events happen to get publicity), So its not even like we are reaching unknown / outside online world folks who are target in bookfairs(for ex) which are similar in many levels.

PS : Am mentioning the above facts with a notion that physical outreach in general gives better returns, which I might not agree wholeheartedly.