The delivery options state will call or mail. If I purchase the tickets online will I be emailed a confirmation number that can be linked on MDE so i can make fastpass selections?
Yes, using will call option you'll receive an email confirmation with the number to link your tickets in MDE to make your FP+ selections. You'll need to go to the will call booth at the park entrance ( or Guest Service at Disney Springs) to activate the passes before first use by presenting your passport or proof of Canadian residency.
Yes you do need to go to GS. You can go to GS at Disney Springs if you don’t want to bring your passport at the park. You only need to activate the tickets at the beginning so you won’t need to carry your passports everyday.