Bivvy's however do traditionally exist in certain areas from sunrise to sunset. Bivving is worth considering especially if the huts on route are overcrowded or very expensive. However it is unwise to bivvy too close to huts and definitely taboo to use the hut facilities whilst bivvying nearby. Drawbacks mean the weight of extra equipment needed, positives include solitude and more flexibility. Most huts provide bedding, check before carrying your sleeping bag up.
Wardens vary in their character, smiling goes along way to help.
On arrival check in, beds will then be allocated, the warden may check what time you wish to get up. Settle the bill before you sleep, saving time in the morning. Most huts do not allow outdoor boots inside, some prefer rucksacks outside the dorms. Pick up the right gear, mistakes are easily made at 2.30a.m. Some huts are perched on pinnacles try to recce the route immediately outside the hut in the light, this could prevent mistakes early in the morning whilst still dark.