Tax is 6.5% on the food. We just got back and I checked our receipts, occasionally they'd charge 6.5% but round up to the next whole penny - even if the tax was .092 they'd charge us .10 not .09 - this was not at every location.
A few of the resorts are not in Orange County - they charge 7% sales tax I believe - we only dined in Orange County though.
ETA
I just looked at my spreadsheet again - all locations except Main St Bakery and Main St Confectionery rounded up to the next whole penny.