What do I do?

What should I do? About my flight back to Sydney? Should I book it before valentines day in time for 14 Feb ceremony and just trust that it would happen? 

I don't want to waste money. 

And it frustrates me. 

I know You provide everything, including the money to get my ticket. But if I can kill 2 birds with 1 stone, isn't it better? 

Oh Lord.... Tell me which date I should book? Fill me with Your peace.