As this is our first ever cruise I would like some advice please. We are only at sea for 2 full days and the other days we will be ashore on the ports of call. Before I purchase a drinks package at around $1000? can anyone give me an idea of the cost on board for basic beers and perhaps wine. It seems a waste as the deal says you have to purchase a 7 days package when we have every intention of going ashore. I tried to find an upgrade for all-inclusive but I don't think the Grand Princess offers this.