Hi there,
Sure thing Melissa! I’m glad you stopped by the Disney Parks Moms Panel with your question. Thank you to you and your family for serving our country.
You can stop by any Theme Park Main Entrance Ticket Booth to exchange your Military vouchers to receive a standard Disneyland Resort Theme Park Ticket valid for the applicable purchased days. The Disneyland Resort Main Entrance Ticket Booths close about an hour after the park does.
Now in my personal experience, we have purchased special tickets that are on a paper voucher with a barcode, like the Military Promotional 3-Day Park Hopper Tickets. The morning of our park day, we exchanged them directly at the turnstile and received our Disneyland Resort 3-Day Military Hopper Theme Park Tickets. So you may not have to exchange them the night before, however, if you are a planner like me, you may rest easier if you do.
I hope this helps. If you have any more questions, please write me back on how I can help you plan your pixie dusted vacation.
chEARs!
~ Lynette