ISO400 films should be adequate for morning/evening shoot. Since Canon AE-1 has built-in exposure metering, try it out beforehand to see whether it still works or not. According to the spec, it can do shutter-priority. Get into a normally lit room, play around with the metering, keep a record of shutter speed, aperture, and EV value with each shot. Get it developed in a photograph shop and check the results. Remember the 4LR44 battery for the metering.

If you are not confidence with the AE-1, bring along a compact/phone camera. At least you get to capture some decent impromptu closeup shots.

GOOD LUCK!!