while your all fighting and dieing il be moving from place to place, avoiding large citys, only going during the day.sleep in a open area,flat ground and a good 10 or more miles away from a city/town
have best way to saviour this way.have atleast 3 people with you aswell, so you can take it in turns to take look out while the rest slepted.allow in the end your all going to die
aliens can sleep for a couple of months at time (habernet...really cant spell)
and no building is safe.there blood burns threw anything.and they would kill their hundreds of their own to burn few a building just to capture 5 people
so...best option. just run in guns blazing. which dynmaite grandes c4 and a shit load of explosions on you, and if you get caught,blow yourself up youll take a few out,maybe get lucky kill the queen.and save the world and become a hero
as for the island ideas.they can swim you know?and dig
as for the magical zombies.most zombies movies its been hells unleades,or radition from space, so that how they on small islands, if there any dead and buried people thats how they get on the islands,they was already on it