Hi Kaycee,
Thank you for stopping by the Disney Parks Moms Panel and asking us your question. If the service member would like to use their 2 Armed Forces Salute discounted tickets consecutively, they will have to activate them individually. One easy way to do this is to add your tickets to your My Disney Experience account. On the first day the service member visits the parks, only one ticket will be activated for their first 4 days. On their 5th day, their second ticket will be activated.
If you'd like more information on how to add the Armed Forces Salute discounted tickets to your My Disney Experience account,
check out this answer I created for a fellow military family. The process is pretty easy.
I hope that answered your question, Kaycee. If you have any more questions, please feel free to ask us at any time. We're always here to help you.
Have a fantastical Disney day!