[cornishfrogboy]

If I was fortunate enough to be in your position and able to go alone with my other half..

I would find 10 days of Universal too much (and I love Universal). I would look into a Discovery Cove ultimate (swim or in my case no swim). 4 more parks to see including that awesome day in the Cove itself with all food and drink included, plus free parking if you have hired a car.

With this in mind, I would go for May/June.