Tara does indeed attend the Xander-Anya wedding “festivities” in 6.16, the big Xander-Anya wedding episode.
Dawn momentarily befriends an embarassed demon teen.
D’Hoffryn is not “FutureXander.” But he does accept Anya’s invitiation to attend the wedding.
A drunken Tony Harris trades blows with a tentacled demon, and sets off a major human-demon melee!!
Dazed from his “visions” of the future, Xander checks into a truly appalling motel.
Buffy endeavors to entertain an anxious human-demon crowd.
Angel:
Gunn and Fred will enjoy a date together.
Gunn will give Fred flowers and some major kissage.
Gunn and Fred will be attacked by a freaky magnolia tree.
Thanks to RAMS for the heads up!
JAN. 17 UPDATE: BBOvenGuy, rather understandably, believes RAMS's "Angel" spoilers are a rehash of his location reports on the Fred/Gunn scene, and he has a markedly different take on at least one key point. Namely: the "date" is actually more of a stakeout.