Is there any difference in meaning between come, come over and come along in the sense of arriving at a place? For example:
I didn't expect you to show up at my party. Thanks for coming.
I didn't expect you to show up at my party. Thanks for coming over.
I didn't expect you to show up at my party. Thanks for coming along.
According online dictionaries, they all mean the same, I mean, I can't see any difference. If so, then could you tell what's the point of adding along or over there?