I see something wrong with it. If you cut the mug down the middle all the drink will spill out
Ok, I have my own refillable mug question but I daren't start another refillable mug thread. lol
If we buy refillable mugs during our stay at Wilderness Lodge (4 of them of course as there are 4 people using them

) can we bring the mugs into the sit-down restaurants there? Or can we only use them at Roaring Fork where we refill them? Would we look like white trash if we brought our two (er, I mean four

) freshly re-filled mugs into Artist Point or Whispering Canyon, thereby saving some money by not buying 4 drinks?