Let me make sure I understand you. Christ set us free, and that freedom consists in everyone having the "freedom to believe as one determins the truth to be"?
Oh, brother ...
No...they are free in Christ to live and follow Him...and no longer under the law of regulations and rules as He fulfilled that law in Himself. This means we are no longer seeking our will but His...we walk by faith and trust in Him as He lives His life out thru us. We desire His will for us, knowing that He is fully dependable to carry that out in us as we yield to Him.
The drinking issue is a good example....if one is an alcoholic then they have no business drinking and they know it...they know to do so means they will fall again into drunkedness and the loses which come from this lifestyle. But for those who are not prone to overinduldging this is not sin for them. Moderate drinking may be perfectly ok and they have no confiction about this.