What will be there is this:
The City is contracting a company to implode the lower portion of the South stands of the Frank Clair Stadium next Sunday, July 20th, at 8:00 a.m. The Market Vendors will be hunkered down in their footprint ready to serve you the minute the all-clear is given by Security, hopefully by 9:00 a.m. Streets surrounding Lansdowne will be closed until that time. Thank you for your patience and see you a bit later next week!
(excerpt taken from the OFM weekly newletter here)
I personally think it'll be exciting and historical and that the market will be full of the onlookers who will no doubt be out for this event. You should go if you can.
what wikipedia has to say