Hi Roberto! Welcome to planDisney! Thanks for sending us your question. I'm happy to help!
It sounds like you have tickets to
Disneyland After Dark: Sweethearts' Nite. You're so lucky and I'm totally jealous that you get to go to this fun, sold-out event!
Special event tickets aren't eligible to be upgraded or changed to a park hopper ticket as they only grant access to the theme park where the event takes place. If you would like to visit
Disney California Adventure Park before Sweethearts' Nite, you would need to purchase a separate
Theme Park Ticket. You wouldn't necessarily need to add the park hopper option to your ticket though. Your Sweethearts' Nite tickets grant you entry to
Disneyland Park, on the date of your ticket, beginning at 6:00 p.m., three hours before the party begins!
I hope this information helps with your planning. If you have more questions, please stop by planDisney again. We would love to help you!
Wishing you magic,
Lisa