How many times can you see Santa?

Is there a rule on how many times you can go see Santa, whether at the mall or elsewhere.. Does it give the kids a bad view of Christmas? We saw Santa down at a fundraiser but Kyla was in one of her moods...And she wanted nothing to do with him. So we got this picture!..

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But we then went to the mall today and she wanted to go see him again and promised to smile this time around. But Santa was going to dinner so we missed him. But we told them we would go back and take their picture again with Santa since she was too shy this night to tell him what she wanted. So I guess in certain circumstances you can see him more than once...