Beth..a seawall is a retaining wall built at the beach access. Some you can step over to get into the water, others are higher and if you stepped over them, you "step" into water a few feet deep. Most of the water close to the seawall is full of seagrass/seaweed, so it is not conducive to entering there for swimming. Most hotels, if they do have a seawall, have a pier which affords access to the ocean by ladder. As stated previously, if one hotel has a wall, chances are that one next door or a few doors down doesn't, so you can have easy beach access.