Hi Aimee! Thanks for visiting planDisney.
The dress sounds lovely! My best friend was married in a 50s-inspired gown and I absolutely loved it. I hope you can get some magical photos while visiting. Where are you thinking? I love
Cars Land in Disney California Adventure Park for its retro vibes and fun lighting. It might be a good fit with that beautiful wedding dress!
During or before the event sounds like the perfect occasion to get some pictures. You should be able to enter the park with a party ticket starting at 3:00 PM. That gives you plenty of time for photos if you want natural lighting. If you're concerned about being allowed through security in a wedding gown, I suspect with the length of the dress being shorter, it should be fine.
Park rules have guidelines about costumes and safety protocols regarding the length of dresses, which you can use as guidance before your park day. However, it's always up to security what can safely enter the parks, so use your best judgment.
You might consider
Disney's PhotoPass Service for your photography needs in addition to any you capture yourself. The talented photographers have captured moments in time with my boys, which I treasure! If you have a standard park ticket for earlier in the day and purchase Lightning Lane Multi Pass, PhotoPass photo downloads are complimentary, which is a great value. Get all the photos taken you want in Cars Land and download them all. Additionally, downloads of photographs captured during
Oogie Boogie Bash - A Disney Halloween Party are included with your party event guide. Some moody nighttime shots might end up being your favorite of the bunch.
I hope this helps!
Elizabeth