[Apply for visa on arrival with 2 different departing flights]

Hey Guys,

Urgently need your help with the Visa on arrival to Thailand regarding tickets.

Me and my bf plan to travel from Sydney to [Bangkok], then stay there for 6 nights, and then [fly to]Phu Quoc island. We booked tickets on kiwi.com. and on the tickets, it showed both (Syd -Bangkok, and Bangkok - Phu Quoc). However, we made changes recently and want to go to instead of Phu Quoc island. Therefore, we won't use the tickets to Phu Quoc island anymore.

We wonder if Thais immigration will question us when we submit another departing [flight ticket to exit the country to Hanoi, instead of Phu Quoc island as shown in the first tickets?

There are reasons why we can't fly directly to Hanoi from Phu Quoc island due to my Boyfriend's visa situation. I am Vietnamese and I don't have any issue with these traveling restrictions.

Hope to hear from you soon. Much appreciated!