[NAGDU] airport assistance question

[Paula Jordan]

Hi all.  I'm  going to show my lack of experience with this question, so I
appreciate your understanding.   I'll be flying in a week or so and will
need assistance from airport personnel in both airports.  I'm wondering if
you should tip the helpers and if so, how and how much.  I suspect this is
something I should already know, but I don't so thanks for your thoughts. 

God bless!

Paula and the pups