One night in Metairie, the other in Baton Rouge. Besides the ones you mentioned, there's Borne Quilter (starting point in Lafayette), the Quilt Cupboard (Morgan City), Quilting Niche (Houma), Mes Amis Quilt shop (New Orleans), Fabric Krazy (Baton Rouge), and Cottage Creations (St. Gabriel).
The shop hop will be going on for the two weekends, but the bus trip from Lafayette will only be the second weekend. You can go into any of those shops on your own and get your passport in order to have it stamped at the other shops.