A blizzard forces them to a remote barn, where Bond declares his love for Tracy and proposes marriage to her; she accepts.
Bond contacts Draco at Draco Construction to arrange a "demolition job" of Piz Gloria. Bond joins Draco and his Union Corse henchmen in a mercenary helicopter assault on Piz Gloria, in hopes of destroying the facility and rescuing Tracy.
In the fistfight aboard the bobsled, a distracted Blofeld is snared by the neck in low overhanging tree branches, ripping him out of the bobsled and apparently killing him. Bond loses control of the bobsled, which flies out of the run, but Bond survives unscathed.
Q: Look, James, I know that we haven't always exactly seen...Well, anyway, don't forget, if there's anything you ever need...
Bond: Thank you, Q, but this time I've got the gadgets, and I know how to use them.
This is a really great moment between Bond and Moneypenny (I can't think of another Bond film in which the "stock characters" are so fully fleshed out):
Tracy: I had an idea about that - three girls, three boys. Pleased?
Bond: Hmmm, not bad for a start. But darling, now we have all the time in the world.
Bond removes the wedding flower decorations, and the couple exchange professions of love.
Moments later, a motorcycle policeman finds the grieving groom cradling his dead wife. Fingering her wedding band, Bond turns and explains that she's tired and is just sleeping: "We have all the time in the world".
As the "Swingin' '60s" ground to a halt, it makes perfect sense the last Bond film of the decade would end on such a somber, and brutally final note. And I would also argue it was the nature of the film's ending, and not George Lazenby, which made it the least successful of the bunch.
Nothing could salvage the franchise better than the return of Sean Connery(!), and a pairing with Jill St. John. And why not, get Shirley Bassey ("Goldfinger," "Moonraker") to sing the theme song again, again. After Diamonds Are Forever (1971), OHMSS must have seemed like just a bad dream.