The answer to that depends on:
- a high likelihood of excellent seeing conditions at the observing site - cloud, how dark, wind, steady or turbulent seeing etc; ideally the observing area should be a short distance from where people will camp;
- for 4 days it had better have some facilities - at the very least water, toilets, showers and an attractive campsite with fireplaces and firewood;
- how unpleasant will it be during the day ( some places are frankly quite unpleasant - hot, humid);
- flies/mozzies can be enough to make some go home;
- what else is there to do during the day, especially if the weather is unfavorable.
There are places like this but they are rare, I only know of 2-3 in the southern states.
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