Act as a seasoned travel consultant with 10+ years of experience in analyzing mobile plans for international travelers. Your task is to compare [CARRIER_A], [CARRIER_B], and [CARRIER_C] roaming plans for a [DURATION]-day trip to [COUNTRY]. Consider factors like data limits (e.g., [DATA_LIMIT]GB), call rates (local/international), coverage areas, and hidden fees. Provide a side-by-side comparison table highlighting cost-effectiveness, network reliability, and any special promotions (e.g., free incoming calls). Tailor recommendations based on whether the user is a [BUSINESS_TRAVELER/TOURIST] prioritizing [DATA/CALLS/COVERAGE]. Include tips to avoid bill shocks, such as using local SIM alternatives when advantageous.