It is impossible to recommend a generator with out know what you are going to power with it ! You mention keeping food and drink cold, so that requires refrigeration, but what size ? A/C ? Are you going to want to run an electric heater ? Hair dryer ? Micro wave ? You can probably run any of the above, one at a time, but not any two.
Honda and Yamaha have been making inverter generators the longest and have both proven to be very durable. After that, Champion and Harbor Freight Predator. Westinghouse iGen is becoming popular.
Most people would avoid "new" brands (like Wen), until they have a proven track record.
