Are there really two Bells here?

Officially, this is 732 Brookpark Drive SW instead of 732 Braeside Drive SW.

What school is this?

I don't think these two houses are duplexes or that their addresses are correct.

There's a somewhat out-of-date map here:
https://www.shopping-canada.com/mall-map/brentwood-village-shopping-centre.JPG

Of the shops already marked, Brentwood Village Dental Clinic is unsurprisingly not in the middle of an intersection, it's in unit 323 (https://brentwoodvillagedental.com/contact/). 309 is the Ginger Beef, 319 the post office. The walls have been moved a bit, but going from the wall of Fresh northwestwards:
*312Aish is Crowfoot Physio (https://www.crowchildphysio.com/)
*312Bish is H&R block (https://www.hrblock.ca/stores/unit-312b-3630-brentwood-rd-nw)
*313Aish is Under the Mountain Games (a newish gaming store; https://underthemountain.games/)
*I'm not sure about 313B
*312 is a vaccination center, open seasonally for flu and COVID shots.

These have interior and exterior entrances; if you go along Brentwood Boulevard past the Fresh truck-unloading bays, you will see the shop signs on the outside of the building.

CD Trader
Unit 306 on this somewhat out-of-date map
https://www.shopping-canada.com/mall-map/brentwood-village-shopping-centre.JPG

Postbox

Brentwood Village Dental Clinic is unsurprisingly not in the middle of an intersection, it's in unit 323 (https://brentwoodvillagedental.com/contact/)
There's a somewhat out-of-date map here:
https://www.shopping-canada.com/mall-map/brentwood-village-shopping-centre.JPG

Picnic table, benches with no back

via StreetComplete 58.0