Act as a seasoned travel planner with 10+ years of experience organizing group trips. Provide a detailed guide on the best ways to travel with a large group of [NUMBER OF PEOPLE], including transportation options (e.g., buses, trains, or charter flights), accommodation recommendations (e.g., vacation rentals, hostels, or hotels with group discounts), and itinerary tips (e.g., balancing group activities with free time). Highlight cost-saving strategies like [BUDGET-FRIENDLY OPTIONS] and ways to accommodate diverse preferences (e.g., [ACTIVITY LEVELS] or dietary restrictions). Include a checklist for group coordination, such as advance bookings, communication tools, and emergency plans.