Frozen EBM overseas

Hello! I will be going overseas for a 4D3N trip to bangkok with my 3 month old. She is fully bottle-fed on EBM. (I don’t latch) Can anyone give me advice if I were to bring frozen EBM in a cooler bag to travel, by the time I fly and reach my hotel the EBM might be thawed in the cooler bag cos it’s not as cold as the freezer. Can I still refreeze the milk and let my baby drink for the next couple of days? How should I go about it? Please advice!!! Thank you :)