Hi annsixty, I'd endorse all that advice. My husband just died after 15 years with dementia (PCA - same as Terry Pratchett). We had some holidays together, but then it got too difficult to take him away. He was eventually admitted to a Care Home, but I took him out every afternoon. Eventually, my brother and family asked me to go with them to our cousin's place in Provence. I really struggled with myself, but brother wisely said, "Don't let the dementia make a prisoner of you too". I went and had a fabulous time. Husband was fine (I'd arranged visitors for him most days). I don't regret going, and it gave me a mental and physical boost for the next stage of things. My husband, before his illness, would have given me his blessings for the holiday and yours would too! Your son will get to understand more about his dad's illness. You could download some relevant factsheets from the Alzheimer's Society website resources section.