I have a third suggestion. Do both.

Rubber bands will not save your plane in a crash, but they WILL save you from major damage in a minor mishap - they type which are very common among newbies. Bang a wingtip on the ground and with rubber bands, you may have a wingtip to fix. With bolts, you have to fix the wingtip plus the fuselage which you ripped wide open.

So if you build it with both, you can start out with rubber bands, then when you are comfortable with it, you already have the option of bolting it on.