The Marriott Rivercenter and Marriott Riverwalk hotels will host several Japanese-inspired pop-ups in celebration of San Antonio’s annual San Japan anime and gaming convention over Labor Day Weekend. Starting on Friday, the Marriott Rivercenter, located at 101 Bowie St., will feature the Cafe Bocadillo Ramen Pop-up to help keep conference attendees fed and fueled for the array of activities San Japan has to offer. Meanwhile, at the Marriott Riverwalk, folks can wash down authentic ramen with Sapporo beer and specialty cocktails at the Born and Raised Ramen pop-up.