Most places we go, supermarkets are easily available, except for Phuket and Krabi. For Krabi, we actually packed 3 days worth of ingredients and put in our portable fridge-to-go and bring it to Krabi. For the rest of the overseas trip, we just bought the ingredients there.
This was our life saver, a travel size slow cooker.
Usually we'll dump the ingredients in and leave it to do the rest of its job. Either we come back during meal time, or we pack it into our thermal flask and bring it out for the day. Easy peasy!
We'll usually put in some vegetables like broccoli, long beans, carrots with a meat, either minced pork or fish.
Its nothing elaborated. But its clean, healthy, quick and best of all, she always go 'mmmmm... daddy cook sooo nice!!' and slurp off every single last grain of rice.
Thats how we make our holiday works. Is it troublesome? Not at all. I used to wake up in the wee hours of the night breastfeeding, changing diapers every few hrs. The word 'troublesome' now goes a long way.