Also, keep in mind that there is no limit (that I'm aware of) to the QUANTITY of bags - i.e. you can have two bags if you want (I recall that from Q&A last year, and I don't see anything in 5.3 of the admin manual restricting you to a single bag - in fact it notes that two are provided).
There is obviously a practical limit - you can't go into the event with 100 bags full of stuff!
