Are you invited to too many functions, where a gift is expected?

What would you do if you were invited to 3 functions by the same people in 1½ months. An impersonal message arriving via email, with an invitation with information including the stores where they are registered. Would you go to all three toting your gift from Target etc. Would you feel used, if you didn’t really know the couple, other than a relative of a relative? Do you think this is proper etiquette?