Hello,
I've been to Orlando twice, once as a family (my wife, mum, dad and brother) and once just me and my wife. In answer to your questions:
- Would 10 days going to be enough to do the main bits at Disney and Universal?
I'd say so, as long as you are happy spending most of the day in one of the parks. It also depends on whether you want to do every ride in every park. If you pick and choose, or plan your day well, you'll have plenty of really good experiences in the time frame.
My advice would be avoid trying to do too much though. Buying park passes for everything in Orlando sounds really inviting, but in reality you can easily do a couple of days in say, Universal Studios, then a couple of days in Islands of Adventure, and then so and so forth in all the parks. You can get package tickets for all the Disney parks or all the Universal parks plus some more.
One thing to factor into your price is car parking if you rent a car. Parking per day is about $25 and can be a bit of a sting if you don't know about it in advance.
- How far in advance should we be booking?
Depends on the time of the year. We're restricted to school holidays, pricing therefore doesn't fluctuate that much (it's just high, permanently). I would advise 6 months out?
- Whens the best time to go that isn't peak school holidays but still good weather etc?
Hurricane season is from mid/end of August onwards. We've been this time of the year and it's been fine, however I would imagine June time might give you great sunshine and no impact from school holidays. American schools do go back late August though so we've always found queues to be minimal around then.
- How much should we be prepared to budget? 5K?
A lot of that will be dependent on your hotel choices and also flights/time of the year. If you want to go Disney hotels and dining, you'll pay more. Happy to go with a hotel near one of the parks? There's plenty to choose from and loads of offers. Make sure you do your research here.
- I assuming hiring a car would be best?
For me, it's a no brainer. Along with the parking though (mentioned above), Google around for the Florida sun pass. It's one of their ways for paying for tolls. It's expensive, and if you don't know about it beforehand you could get caught out.
Hope that helps,
Tom