Hi Janet,
Actually dual income doesn't equate to extra $$$. It all depends on the committment that we have. For us, we have car loan, reno loan, DH's study loan, insurances, credit card payments, etc. Not to mention housing loan cos it's paid thru CPF. I don't use credit cards nowadays cos I don't want to spend unearned or "future" money.
A trip to Japan will deplete my savings. However, I don't mind as long as my Dad and DH are happy. DS may be too young to understand, but all his "actions" there will definitely be unforgetable to us. I always remind myself too that I must bring my dad around the world when he's still healthy.
My dad had been to UK for holiday. That was 8 years ago. He loves that place.