Rudy writes:

If the point count in playing a hand is at 25, and I’ve laid a Ace to make it 26, my opponent plays an Ace to make it 27, he gets 2 points for the pair, and I say “go” and he has another Ace, does he get 2 points for the first pair of Aces, and then 6 points for 3 of a kind ?

We're handing this over to Ezra, the Cribbage Corner librarian and rules guru, for a definitive answer. Ezra has a snowy white beard and half-moon spectacles, as you might imagine. Ezra says:

Rudy,

Unfortunately he not only scores 6 for the pair royal on top of the 2 he already scored for the pair. He scores an additional 1 for go, making 8 in total for the play of two cards.