Can I get out of supplying alcohol to minors charge?

Hello. This is not a DUI/DWI charge. I just was not sure what topic to put it under. My question is, is there a way that I can get out of a supplying alcohol to minors charge if the minors say that I did not supply them with the alcohol at court? What happened was I picked them up and they had been drinking and I got pulled over for my tag lights being out. I had another passenger with me that is 30 and he had an open container. He got charged with the open container. The office gave me 2 tickets for supplying and gave the minors under age drinking tickets. They will plead guilty for the under age drinking, but should I be charged with the charge I recieved even though the officer had no proof and the minors will tell the judge (or whoever) that they did not get it from me? Thanks.