Illumination on lumens
Lumens are the measurement of how much light you get from a bulb. You have to determine how much light you need and weigh that against the weight of the lantern and, of course, the cost.
If your goal is to use the lantern for only setting up and taking down your camp area after dark, then I’d recommend something that is more lightweight and puts out less light. You’ll of course want a fully dimmable light so that you can tune the amount of light output to your needs but generally your battery powered lanterns that put out about 300 or so lumens should be able to handle this job. If you’re just planning on playing card games on the picnic table and having some drinks with friends Gas lanterns that put out 1000 plus lumens or some very high output LED options are probably the way to go.