Congrats on your pregnancy and for making a good decision to BF your child.
breast milk can last for about 3 hours in room temp.
Normal fridge about 2 to 5 days.
Freezer compartment about 3 months.
Deep freezer about 6 mths.
If your freezer has lots of other frozen food best is to get a deep freezer for space. My freezer dont't really have a lot of frozen food so I conquered the freezer compartment. Hehehe
As long as you BF, supply will always be there. So dont't worry about no milk. your breast WILL always have supply as long as you cont to BF. you can choose to bring a bottle of EBM, keep in cooler bag, bring hot flask and mug to heat up the milk. Milk can last up to 8 to 24 hr in the cooler bag (depending on brand of cooler bag). But I dont't really like it coz too troublesome.. And if you feed your baby with EBM, you also need to express or you will miss one feeding session, signalling to your body that there's no demand for milk. Not good in the long run. What I always do is get a nursing poncho and BF my son wherever I am, be it in the restaurant or even while shopping! When he got heavier, I used carrier and just BF him. No hassle. If you r not confident to BF in public, there are many nursing rooms available. I always refer to this blog for info on nursing rooms. http://www.madpsychmum.com/p/nursing-room-review.html?m=1
But let me warn you.. The initial stage is NOT easy.. You may have a struggling baby who doesn't know the proper latching technique or even family members who are not pro BF and kept asking you to give baby FM. NB baby will cry even though you just fed your child an hour ago. So you may have ppl telling you, your breast milk not enough thats y baby cry or even ask you to give your baby plain water coz your baby is thirsty.. Pls dont't give babies under 6 mths plain water. Not good for their digestive system. Key is perseverance and patience. Keep on latching and feed on demand. When you are at the hospital, get the lactation consultant to teach you the proper technique. Keep asking them qns if you r not sure coz if you call them again after discharge, there will be charges. Do read up about BF to get you fully prepared. My own mother and my husband was not pro BF. In fact no one in my family is pro BFs, not even my mother in law.. Thank God, I was determined and I'm still BF my 1 yr old baby...