HI Ian, Like you understand,a Salesforce Platform license is meant for users who use specific customized functionality, like apps, rather than standard Sales or Service cloud functionality. For this reason, some standard objects are blocked from that type of profile and Order is one of them."
However, you can access it via UI in VF, APEX, Aura, LWC. You have to use custom apex classes, triggers, and wrappers and get your job done. It's because Apex runs in System Mode and surpasses license limitations.
Like you understand,a Salesforce Platform license is meant for users who use specific customized functionality, like apps, rather than standard Sales or Service cloud functionality. For this reason, some standard objects are blocked from that type of profile and Order is one of them."
However, you can access it via UI in VF, APEX, Aura, LWC. You have to use custom apex classes, triggers, and wrappers and get your job done. It's because Apex runs in System Mode and surpasses license limitations.
Reference: https://salesforce.stackexchange.com/questions/264587/can-platform-license-users-access-the-standard-order-object
Hope this helps you. Please mark this answer as best so that others facing the same issue will find this information useful. Thank you