Dearest Maggie,
I don't think I can add much more than our lovely family here at LCT has said, but since I am going through much the same as you are with my sweet hubby, I share your pain, and fear of ( the travel bug we have had for all the years we have shared together).. It is hard to know if you are right to just go and enjoy or not , and we are faced with the same dilema.. although we are going to France in October and that's that!
So darling, while I can't help you with what is right for you ( as none of us can) we are all here for you.
God bless you both!