Great Adventure Christmas 2025. With our 2023 prices held and some amazing new additions, you’ll be in for a real treat this year. 2025 is here, which means amusement park and theme park opening dates for the 2025 season are upon us.

2025 is here, which means amusement park and theme park opening dates for the 2025 season are upon us. Discover a winter wonderland with festive treats, santa sightings, twinkling lights, and endless smiles at holiday in the park at six flags great adventure!