I have type 2 but only just barely and also recently diagnosed. I do however experience these lows ever since I had gastric bypass surgery 20 years ago. It’s an unfortunate side-effect for me. Since he hasnt experienced one yet, he won’t know, but I can tell you w me, they come on FAST. I mean, like between the time I first start feeling the sweating and NEED for sugar NOW, and when it’s at a very serious level that needs immediate attention is 10-ish minutes. At least for me. Thankfully you’re surrounded by food at Disney, but as another poster said, if you’re stuck in a ride or in line and that low comes on, have some juice or granola bars on you. It helps! I know I get out of control eating everything I’m sight until I feel it going down. Not exactly the *optimal* way to deal w it. I feel I have no control. I hope all goes well!