I'm an Anthem rookie ... only sailed her 8 times (Westbound TA, Bermuda, CA/NE, Bahamas, Eastern Caribbean, Eastbound TA, Eastbound TA, Westbound TA). ETA: Also sailed Quantum on the maiden voyage (TA from Southampton to Cape Liberty).
For my Liberty sailing last September, I took Amtrak from Wilmington, DE to Newark Penn Station. ~$90 for RT train and RT Lyft to/from port versus ~$50 tolls, $270 parking, and $$ gas. Would not hesitate to do it again.