Yea I'm the BK blue noser.
Your coming at a good time of year, Halifax is really awesome during the summer, can't really say the same for the winter though.
If your around you should check out citadel hill in the main of downtown Halifax, it was a strategic fourteen canon battery built in the late 1700's, its pretty cool to take a tour through there, preferably around noon when they do a 21 canon salute.
If your coming around July, you might want to see a concert, Sir Paul McCartney and Kiss have concerts in the Halifax Commons on July 11th and 18th, respectively. To buy tickets, visit here...
http://www.ticketatlantic.com/en/home/concerts/default.aspx
If your into hiking, we have a few really nice trails, one of them being the "ovens" which is a really cool trail with caves carved by years of smashing waves cut out that you can walk down in.
Here is the site for that... http://www.ovenspark.com/index.shtml
You guys just like to be chill and relax in the sun, then there is a ton of awesome beaches you can take a look at, Lawrence town beach, Martinique beach, and Conrad beach just to name a few.
Plenty of shopping also, at Halifax shopping center, Micmac mall, and downtown Halifax in general.
There is probably a ton of stuff im forgetting, but summer time in Nova Scotia is never a dull moment, there is always something going on, and it gets really hot and humid so I really suggest a beach or even a lake beach such as dollar lake or Oakfield park in Wellington, where I live.
Anyways hope that helps.
Thank you Strand. Yes I think that helps a lot.