It is slightly less weird because you are going as part of a group, so she has just joined the group rather than "tagging along" with you.

It would be really weird if you simply said you and your wife were going to africa, and she said she loves africa can she join you...

Of course the key here is what is in her head. Is she excited about going to africa with a group that includes an old friend she hasn't seen in awhile, or is excited about being in africa with you?

Let us know how this turns out... and have a great trip!

-- The world is what we make of it --
-- Dave
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