Hey sean27,
I'm happy to see you're considering joining the QuickBooks Online family! It's a simple and convenient way to access the powerful accounting capabilities you're used to. The system was designed with a focus on choice, so there are two options for payroll subscriptions. I'll be happy to assist you with these options.
QuickBooks Online Standard Payroll is designed to give you control, while using settings directly from your tax agency. To make employee's exempt from vacation, you can easily set their accrual to 0.01 hours annually.
Advanced Payroll Powered by WagePoint provides you with the option to override default vacation settings, making it simple to disable it entirely for employees.
To learn more about the payroll modules available, check out this handy comparison: Standard and advanced payroll features
Let me know what you decide!