It will be our first time to visit New Zealand and we'll have 1 day in Tongariro National Park this coming April. I need advice on whether we spend this 1 day hiking the Tongariro Alpine Crossing or going on the chairlift to Mt Ruapehu and doing one of those volcanic short walks. Will there be much difference in scenic views? My travelling companions are LOTR fans and they want to see sights from the movie. Is it actually possible to do both? Any input will be much appreciated.