I'm reading all kinds of horror stories about booking bus tickets from the US. I need to book a trip on either Primera Plus or ENT for next week - I'd prefer to secure the tickets now, but what I hear is that you don't get confirmation (nerve-wracking!) and/or can't do it with a US credit card. Before I input those precious digits...any feedback? From what I understand, since it's the school holidays, buses CAN get booked up.