Blue Jays play the Diamondbacks July 14th, 15th, and 16th. The 15th is also 'Chappy Couture Shirt Giveaway Day' according to their play schedule. Not sure how many Perl/Raku hackers are also baseball fans but good seats are still cheap this far out. Ballpack is less than 10 minutes away by car or 20-30 minutes by foot or transit from the hotel hosting the conference. Might be worth making it a long weekend in Toronto.