The motor inn was great for Lee's group until they ran out of the one week supply of food they got from the strangers car but Lee acknowledged that the fall out shelter had enough food to survive down there for months.
Vernon could have offered Lee's group a trade, the boat for his supplies. Vernon’s people lived down there for months and were never detected by the walkers and they had candle light. Lee’s people could have lived down there for months beyond where season 4 began and waited for the herd to blow through Savannah which would have probably taken a week since there would have been no one for the zombies to eat. Then Lee's group could have taken the train and searched for some place else.
There is no way Vernon would have been able to fit all of those supplies on the boat so all of that food was wasted. If such an arrangement was made Clem wouldn’t have felt the urgency to look for her parents without Lee because she would know they would be staying in Savannah for a while and Lee wouldn’t have been bitten looking for her.
What do you guys think?