Regarding the ASG: all of this is, of course, assuming all STH/PPH are offered a chance to buy ASG tickets. Remember that this is not a true Nats home match - the other 29 MLB clubs each get allocations and so do various sponsors and VIP's. (TBSITH will be available that night - I can't attend evening matches because of medical and logistical issues*, and will probably be somewhere overseas during the All-Star break.)
*Lock of 2018: Metro will not stay open late that evening. If they won't stay open late for the Redskins, they won't stay open late for anybody.