Plane tickets: Either the host company buys your tickets directly, or you buy them and the company reimburses you. You are responsible for any costs associated with personal travel you undertake above and beyond the round trip between Boston and the host company. You should negotiate the itinerary and the timing of any reimbursement ahead of time; do not let let the company choose your flights without consulting you.
Lodging: The host company will arrange accommodations for you. Make sure they communicate clearly where you'll be staying before you leave campus; ask the host company to send you links to information about the accommodations so that your team can investigate the options. Although the accommodations need not be fancy- and they probably won't be- they must be clean, safe, and provide you with reasonable access to transportation to your work site. Single rooms are typical, and suites are fine. However, double rooms are not usually appropriate, particularly for mixed-gender teams. It is important that you be housed in professional lodging, such as a hotel, guesthouse, or rented apartment, and not in a bedroom above your host's garage. If, upon your arrival, you find that the accommodations are not appropriate, you should attempt to find more acceptable lodging within a reasonable time and make sure that your host company is willing to pay for it. Any serious lodging problems encountered by your team and/or change of accommodations should be communicated immediately to the MIT Sloan Action Learning program office.