100,000 tickets worldwide
The offer lasts for 7 days
Assume equal quota of tickets on each of the 7 days
So 14,000 tickets per day
2 tickets allowed on each booking
So maybe only 7000 applications accepted per day worldwide
How many countries are in the system to receive a daily quota?
If 50 for example then on average 140 applications per day per country (so around 1000/country over the offer period)
I saw a figure today that in Australia there are 340,000 nurses alone
Won't take long for the quota to be filled each day.

Not knocking the promo - just advising tempering of expectations