1- NAPPIES! OMG what do you do? Take some with you, buy some? What?
For one week, just take a lot of nappies.
3 - Solids? Do I pack enough for the trip? Or buy some there?
If fussy and on jars/pouches then take. If on fresh mashes, test before the journey to see if he will eat jars/pouches. I would take at least some, but might not be worth taking a lot in that case. For a week, don't stress too much if he only eats banana or something all week.
4 - Immunisations? He's under 2 so is that a problem?
A lot of people travel with babies this age. You have to consider that they are not very well protected - then again, they are a lot more under your control in some ways, too. You should ask your GP to go through risks and what you can do to minimise them.
5 - 8 hour flight (I dont fly well) with a baby who refuses to sleep anywhere but his bed (we're working on it). Any tips? Do I ask the dr for sleeping tablets? What do I do?!
Survive? But don't stress. He might be ok and nobody will truly hate you. I would tend to book a night flight for ages 1-2 yrs as mine have been walking by then and a day flight would make them stir-crazy. A night flight they don't get a full night's sleep but the flight will be much easier. You just have to have a next-day plan which allows everyone to catch up.
6 - Prams. Do you take one? Will it get damaged by baggage handlers?
Depending on adult/kid ratio and ages of other kids, I would either ditch it for a good carrier or take a cheap umbrella stroller. Your odds with baggage handlers are pretty good.
7 - High chairs? What do you do? How do you feed solids?
The human high chair, if none available.
8 - Vehicle transfers (ie from airport to hotel) what do you do with no baby seat?
Take the car seat. It won't bother you to pack it for a one-stop holiday - not much lugging there.
9 - Water - my DS refuses to drink water (drinking in general is an issue - he struggles with formula from a bottle too) and I'm worried he'll get dehydrated. Do i add some apple juice or something to sweeten it? Or just keep struggling between now and April and hope he gets the hang of it?
Don't sweat it until April. April is a long time away in development terms for babies. If still in doubt in April, I wouldn't be above sweetening the water a little for that week, although I don't do it generally. Holiday rules!
0 - Lay overs in airports! With all our stuff checked through, what do we do with a potentially screaming 11 month old with a 6 hour wait in an airport? What do we do if he wants to sleep but we've no where to put him? Luckily we have Qantas club but its not going to be useful for all the waits.
Make do. The airport will be pretty distracting and entertaining. Catnap on lap/chest/in stroller/etc. Sleep and holidays don't mix all that well, in my experience. The upside is you will often be travelling with at least one extra adult so you can just shuffle around and catch up, as long as you don't overdo the sightseeing.
How did the luggage allowance work on the plane?
Did bubs get their own checked luggage PLUS checked pram PLUS check cot? That seems like too much!!
Check with your airline, but most give a baby allowance of 10kg, or allow you to check up to X baby items such as car seat, stroller, etc. I've never taken a cot - you can usually get them at the other end pretty easily, unlike car seats and strollers which can be trickier. This will be in addition to your 20kg each seated passenger or whatever you have - even with all the extra equipment I've never managed to fill even half our family quota. Remember tropical holidays don't require bulky clothing.
In between now and then...? Do all you can to train up your coping skills for little blips in the plan? And try not to stress?