Sorry to hear about your dad. There's a few things to consider. First a little about me....huge Disney fan - been to the parks almost every year since 2009, Hubby is T1Diabetic and had a heart attack, stent and bypass surgery (not all at the same time) and I work with cardiologists on a daily basis (technologist). After any event there are going to be new meds that can affect him in a few surprising ways. My DH was surprised to see how easily he would burn in the sun, also some cardiac meds can cause lethargy so be prepared. Walking is awesome!!! Too many people become scared to walk and exercise but it really is the best thing he can do. If he had Angio, he would know if he is susceptible to further angina attacks (if he has other blockages that can cause problems). I always carry a few chewable baby asperin in my purse and nitro spray. Not to scare you, but I always take notice of the AED locations, just in case. The biggest challenge, so soon after a cardiac event , is getting the medications titrated properly. Hopefully that helps!