Huge {{{hugs}}}, hope you are feeling ok again soon.
After my m/c, I too thought that having some sort of 'service' was a bit over the top. Would my family think that I had finally 'lost it'??? Anyway, I did finally go out and buy myself a nice little book about angels, and released a helium balloon. I loved the book, and I always think about my 'baby' fondly when I see it.
As for the trip, perhaps you need to use the 'hormones' excuse to lay it on the line, just as you did with us! Tell him exactly what you told us, with the same words even! And then tell him that you're aware of him not being able to 'fulfill' your wishes this year, but that you would love to be able to count on it from now on, and that you'll remind him yearly just in case he forgets!
Hopefully he'll be so overwhelmed by your command of the english language (ie: boink) that he'll agree!