u/Hkgcan

I’ve been approved for the BMOPorter World Elite credit card and I’m going to book a flight with it soon. So just to be clear on the perks, I can book the Basic (cheapest) flight and still bring a carry-on and choose a seat at no extra charge? At what point in the transaction is that acknowledge? At the payment screen? I don’t want to mess it up and have to make a phone call to fix it. Any help or tips would be appreciated. Thank you in advance.