Hi LaNita! Thanks for visiting planDisney.
If you check the
Permitted Items list, you'll see vape pens aren't listed as prohibited items. You should be able to have it on you as you go through security, however, all persons, bags, and items are subject to search and it is up to the discretion of security what may safely enter the parks.
As you have noted, you can't
smoke at Disneyland Resort. Smoking is prohibited in the parks, Downtown Disney District, the Esplanade between the parks, and all Disneyland Resort Hotels. The rule includes vape. I'm sorry if that presents a challenge. Taking a break obviously interrupts your park day for you and your group. I suggest you use whatever support methods you have at your disposal to extend the period between breaks. Just check that Permitted Items list for guidance.
Timing your breaks so they don't interrupt the magic might be easier with something like a plan in mind. Check the
Daily Events Schedule for an idea of what entertainment, parades, or fireworks you might not want to miss. Schedules are subject to change, but it's a great place to start!
Have a magical time.
Elizabeth