And just to clarify - snack credits cannot be used on alcohol.
Most of the quick services only offer pre-packaged (like can of beer, single serve wine or hard seltzer, etc) or none (like Casey’s at MK). A good alcohol combo QS place is Docking Bay 7 t HS! That’s kind of rare though, most QS places are either a good value for the food or the drink, just not both. The QS in EP/Mexico is another strong combo within the parks.
Table service generally have a good selection. I think they now include any single drink up to $28 (no flights or souvenirs).