How do I get past the guards?

Hint 1 of 6:

Things are different now.

Hint 2 of 6:

Giving them something will still work.

Hint 3 of 6:

Maybe they'd like to have a drink with you.

Hint 4 of 6:

Choose the Soporfic you won from Caliph.

Hint 5 of 6:

Watch that stuff--it can be deadly!

Hint 6 of 6:

Practice your new skill.