Firstly congratulations...lovely news,
We travelled with a 4 and 2 year old which i know is a different kettle of fish to a newborn but having always had the philosophy that i would go anywhere regardless of their age thought i would offer some support and advice!! We travelled to DLP when DD was only a few months old and had a great time.
Once you get there you will find everything you need. The big supermarkets such as
walmart and publix stock baby food, nappies, formula etccc just like over here if not more. All the parks have designated baby rooms where you can do nappy changes, heat milk, a microwave for food. Most even sell nappies and food jars.They are realy family friendly.
You would probably need to reserve a sky cot and also take your own car seat and pushchair. The seats that click in to make a pushchair are realy versatile and ideal for this.Pushchairs and seats do not count in baggage allowance.The strollers you can hire at the parks aren't realy designed for little babies and provide little shade which you will need even in November.
Mothercare do some great bottles which self sterilise in a microwave. They are so clever and if you bought some of those you wouldn't need to take any further sterilising equipment with you. Assuming of couse you are bottle not breast feeding and have acess to a microwave.
I would say go for it...whenever you travel with children is luck on the day. Luckily babies sleep for long periods normally but we have had awfull flights with whingy toddlers!! Hope this helps, Rachael :