Juice at the knuckles??
 

Hello,
I recently received an orchid as a present and the flowers are done but I noticed juice at all the knuckles. Is this anything to worry about? Thank you

Nope. That is sometimes referred-to as "honey dew", and is often a sign that the plant is doing well.

The only potential issue is if it attracts insects, and that's pretty unlikely in a home environment. If it does, a gentle wipe with a paper towel wet with warmed water removes it.

Also called "happy sap" for rapidly growing plants. Its very sugary and is actually pretty tasty! Feel free to try some. I do it all the time.