Frankly I would not miss any of them. I've stated on this board many times that I wish Jimmy would do more rarities and dig deeper into his catalog. I've been going to Buffett shows since the late 1980s and I am definitely tired of seeing so many of the same songs played EVERY year. I can't imagine it would take that much effort to eject a few of the staples and play a few more deeper cuts. Playing the same stuff every year means they're pretty much on auto-pilot, which to me is just lazy. Sorry, hate to say it, but there is some truth to that. The shows they put on take about as little effort as is required for a touring band.
I think Jimmy is operating from the perspective that most fans will be disappointed if he doesn't play all the staples, but frankly I think he needs to have more faith in his fans than that. It would make seeing a show where he plays OPH, when he only plays it a few times per tour, that much more special if you catch a show where he plays it.
I love Jimmy and will continue to go to shows when I can because one of these days Jimmy will hang up the guitar and we'll have no more Buffett concerts, which will be a sad day indeed. So I enjoy it while we can, but I'd enjoy it more if he'd play more tunes that we don't hear at every concert.
OH, and the most thrilling moments I've seen in recent tours? When he played "Coast of Marseille" as an encore at a show at Shoreline in Mountain View, CA (that track ended up on the "Encores" album, btw) and when he was playing a rocking version of "Woman Going Crazy on Caroline Street" a few years back.