Hey there Sherry,
Welcome to planDisney and thanks so much for stopping by with your question! It looks like you are planning on heading to the Disneyland Resort in the next few days - how exciting!
When it comes to 3rd party
theme park tickets sold through a 3rd party, I am certainly no expert, so I would first and foremost recommend you reach out to the vendor to confirm all the terms & conditions of the tickets they sell. However, it looks like the 2-day 1-park per day option listed is just a multi-day ticket.
Multi-day tickets purchased through the
Disneyland Resort website do not have blockout dates, but just need a corresponding
theme park reservation for each day you plan to visit. So again, since the tickets you referenced are sold through a 3rd party, you'll want to contact them to confirm the details, but if they're similar to the multi-day tickets sold on the Disneyland Resort website then you won't need to worry about blockout dates!
I hope that's helpful, Sherry! Thanks again for your question. Feel free to stop by to see us here at planDisney if you think of any other follow-ups as you continue to plan your trip. We'd love to help!
Have a Magical Day,
Greg