I’m not buying tokens, because it’s ridiculous on how to use them.
Data Tokens kick in when there is no applicable data available during the given time period. It's hardly ridiculous.
Each successive data bank kicks in when the prior one has been exhausted...
8AM - 2AM: Anytime/Service Plan data >> Token Data >> FAP
2AM - 8AM: Bonus Zone data >> Anytime/Service Plan data >> Token Data >> FAP
FAP = Subject to the Fair Access Policy (throttled)