We like to drive to FW and take the internal bus back to Pioneer Hall. It's very easy. Definitely leave some time to find parking as the lots are full and parking on the grass IS allowed. You may have a short walk to the bus stop, wait for the bus, and a 10-15 min bus ride depending on the route the driver takes and how many stops they make. For this I would allow a minimum of 30 min. (During holidays it can take 40+ minutes just to get in to FW as so many people want to see the decorations and they can't, so are turned away.) You still have drive time from PO to FW and check in time and a bathroom stop as bathrooms are NOT in the hall but outside and can be cumbersome to get to during the performance. HTH