You're right in that Worf's hands are tied by his orders and his duty but not that he would have preferred to not "arrest" Okona - Worf lives for that stuff and would have done it anyway - battle is a bonus.
Worf busts in on Okona in the middle of a tryst.
WORF: You will come with me to the main Bridge.
OKONA: I'm sure it can wait a few minutes.
Worf has no patience for Okona and is aggressive.
Whilst quite calm, we see Okona square off with Worf and gets, pretty much, right in his face. Okona doesn't like Worf's acting tough and trying to push him around and is quite prepared to knock Worf on his Klingon ass if he's up for it.
WORF: I'd like that. But I have my orders.
Worf really doesn't like this guy and is saying that he would very much like to go a few rounds with Okona and would love nothing better than to to fight but his orders are to take Okona to the bridge - not go one on one with him. Okona understands and accepts that, if he did anything, he might get a couple of punches in but he'd merely be restrained by Worf and the security officers and then taken to the bridge. Okona wouldn't get the one on one fight with Worf that he wants and so concedes.
OKONA: Some other time.