What does the halal label mean to non-muslims for non-meat foods?
Since Halal food can't contain pork meat / by-products or alcohol, you'll see some ingredients substitutes (for example, Halal candy will not contain pork gelatin for sure; instead probably agar-agar will be used). So it might be advantageous if you can't consume alcohol or are allergic to pork.

As with any substitutions, sometimes you'll see a difference in texture / flavor, sometimes not.