Expect to be searched. It's not recommended to bring a backpack but is allowed so long as it is small enough hold while seated without disturbing other patrons. The rule is enforced in a case-by-case manner, and one person may be able to bring a large backpack while another may be asked not to bring a small shoulder bag. Leave bags of stuff at home. Only bring a litle money, your keys, phone, id, etc.
"small" backpacks allowed
Clear bag policy
They have separate lines for people with bags. If you do not bring a bag, you can get through security much faster.
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