WAIT a cotton-picking minnit!
You are saying that this law enforcement officer CONFISCATED 2 sealed bottles of whiskey that were NOT available to the driver or passengers, then DESTROYED the evidence by pouring it on the ground?
By the way, that could be construed as improper disposal of hazardous waste!
Who did you pay the fines to, the officer? Did you get a receipt?
As stated, you should NOT have been allowed to proceed until a properly licensed driver was found.
I think a lawyer is definitely needed. As described, this incident has WAY too many improprieties, IMO.
By the way, I strongly recommend that you and your family (and friends) AVOID Iowa in the future!