Our daughter had a cath procedure in which an amplatzer device was placed to close an atrial septal defect last year. She was 22 months old at the tie. The anticipation and fear were absolutely the hardest thing our family has ever gone through, but the procedure was ultimately very easy and the results have been wonderful. Our daughter was under anesthesia for 4 hours (had a bunch of testing about pressures in her pulmonary circulation as well as placement of the device). The first few hours after she woke up were tough, but she spent one night in the hospital and went home the following day. She has since had several follow-up exams and her heart muscle is back to normal size, her rhythm is normal, and all indications are that we are done with all of this terrifying cardiology stuff. Certainly I'm no expert, but I am glad that we went with the cath procedure rather than open heart. Our daughter had some pain in her groin where the catheters were inserted for about a week, but it was nothing like the pain of open heart surgery. She had some antibiotics at the hospital, but I think the only medication she needed at home was aspirin to prevent clotting. Not to take away in any way from how difficult the period is leading up to the procedure, but I hope you can take some comfort from knowing that I'm already forgetting some of the details a year later. I was also really worried about airport security - security is scary enough for a tiny little kid, and I really didn't want to have alarms going off and stuff. Turns out we had nothing to worry about on that one - the device doesn't set off the metal detectors. I'd be so happy to answer any specific questions you might have. Meanwhile, do try to find some joy in your time with your daughter before the procedure. A Disney trip sounds just right.