anyone ever used sportsbook gift cards without restrictions

So I keep seeing these sportsbook gift cards at convenience stores, but there’s always some fine print about “where available” and state restrictions. Anyone actually just buy one and load it up to bet with no headaches? I mean, if you’re in one of those “allowed” states does it really work that smoothly or are there still hoops to jump through? Seems like a decent way to manage your spend, especially if you’re not big on giving sites your main card.

Curious if the restrictions are just legal wording or if you actually get blocked sometimes even after buying the card. Just looking for straight stories before messing with it.