Could you tell me if there is any difference between pour drinks and pour out drinks? For example:

Could you pour (out) drinks while I serve the snacks

Since it's related, is there a difference between serve and serve out. For example:

I will serve (out) snacks and you could show the guests around.

Could you tell me if there is any difference between pour drinks and pour out drinks? For example:

Could you pour (out) drinks while I serve the snacks