The World Federation One Stop Fiqh

Ritual 407

After shaving or taqseer, all that which had been forbidden to the pilgrim during ihram becomes permissible, except intimacy to the wife, use of perfume and, as a matter of precaution, hunting.

Apparently, intimacy to ladies is not confined to intercourse, rather it applies to all types of enjoyment which are forbidden during ihram. However, it could be said that the pilgrim can attend marriage solemnization and be a witness at it.