While your cameras come with mains adapters they charge using direct current rather than alternating current. Technically this lends itself to solar pannels rather well. Having large and cumbersome pannels aligned with the sun is not so useful, effectiveness varies with the amount of cloud cover and takes a very long time even using modestly sized pannels.
You don't say if you're taking a vehicle but if I were you I would find a 12v adapter and use that instead. Robust, proven and convenient. If you still need solar then you can buy solar pannels, probably quite sizable in order to be fast enough, and a power inverter to give you your AC mains output.
As an example, a 60w panel I found on the internet has these specs.
Dimensions fully assembled:142(w) x 77(l) x 79(d) cm Net weight:28.4kg
A laptop needs say, 100-150w. Charging cameras requires much less.