THE SHORT ANSWER
Buy whole beans if you have a suitable grinder and want to adjust the grind for different brewers. Choose ground coffee when convenience matters more or you do not have a grinder; ask for a grind matched to your method.
Match the purchase to your actual morning
A hand grinder sounds romantic until you are late for a train. Think about how you brew on a normal weekday, how many cups you make and whether anyone else shares the kitchen. The right format is one you will use consistently, not the one with the most impressive equipment list.
Grinding is a recipe decision
Espresso, a cone dripper and a French press need different starting grinds. A single all-purpose supermarket grind may not suit every device. If you buy grounds, tell the seller the brewer you use and buy an amount that fits your pace. If you buy beans, check that your grinder can handle your chosen method.
Build a travel routine
For a short backpacking stay, pre-portioned grounds and a simple filter setup can keep the bag light. For a long base-camp holiday, whole beans and a compact grinder offer more adjustment. Either way, close the coffee securely, keep it dry and choose a dependable cup over an elaborate setup you never unpack.
Change one thing, taste, and keep a short note. A recipe becomes useful when you can repeat the cup you enjoy.
Try it for yourself
Sources & further reading
Source links support the factual context. Our home recipes and tasting suggestions are identified as starting points.