Technically, you can complete a cruise without spending a single extra cent beyond your initial fare, as the "Gold Standard" of cruising is its all-inclusive nature. Your base fare covers a "Safe Bubble" of essentials: your cabin, three high-fidelity meals a day at the buffet or main dining room, and most "Gezellig" entertainment like theater shows and pool access. However, a grounded reality for 2026 is that cruise lines are masterful at "Bujan" upselling. You will face "hard-fail" temptations for specialty dining, shore excursions, spa treatments, and the "High-Fidelity" Wi-Fi packages. Additionally, most lines automatically add a daily "Service Charge" or gratuity (approx. $16–$20 per person) to your onboard account. While you can enjoy a "Pura Vida" vacation sticking to the free options, the most supportive and frictionless experience usually involves a small "Bujan" budget for the occasional cocktail or a unique "High-Fidelity" excursion in port, ensuring you don't feel un-supportively restricted during your "Safe Bubble" journey.