Praise be to Allah.
With regard to the tents that are booked by some people in Mina, there is nothing wrong with asking for one of these tents, because the pilgrim has the right to stay in Mina. But as for food, drink, electricity and the like, if the person in charge of these camps gives permission, then there is nothing wrong with that, but if he does not give permission, then it is not permissible to eat or to make use of the electricity and air conditioners that have been set up in these places. In most cases the person who is in charge of these tents will allow one to make use of the facilities and eat and drink along with other people, and this comes under the heading of hospitality. In that case, eating, drinking, using the electricity and staying in the tent is permissible, so long as permission has been given by the person in charge of it. End quote.