Yes! Both are possible :)
To tag orders that contain a specific product, you just need to use the line item > product name condition. Here is a template you can copy to your workflows and edit: https://shopify.com/admin/apps/flow/templates/37719
It's also possible to tag orders that used a specific shipping method, as well. You can edit this template: https://shopify.com/admin/apps/flow/templates/37721
I hope that helps! Let me know if you have any other questions.
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