Hi, newbie here. Any guidance is highly appreciated. Traveling with a toddler on JAL premium economy DEL-HND-SFO and the layover is 13 hours (7AM-8PM). Will I have access to the Sakura lounge the entire time or only for a few hours before? I'm unable to find this information online. Will the lounge access change if I upgraded to Business class? Currently, there seems to be no airside transit hotels available. Please correct me if wrong Thanks.