Not sure Donald her order just showed up from Yandy.com this morning I think it is big enough the weeks worth of clothes may just fit inside it
People will give you a bit of the stink eye when you're asking the bartenders to fill a huge cup, not to mention, when you're up at the bar its a chance to talk to new people. So, the extra trips are actually a good thing.
We use the 20 oz with lids, they fill them before they get empty if you tip occasionally regardless of size!
We have the 20 oz and it seems to be just fine for us. We get to the bottom of the drink before the ice is gone. As noted earlier, the trips to the bar are great for meeting new people..... sf