The space between the images and text is visually unattractive when only landscape-oriented images are used in a grid. Is there a way to make that smaller if there a no portrait-oriented images in the grid?
Look at the first grid under Saturday 11 march here:
You could try changing the Aspect Ratio (under Image Presentation: Grid) to 3:2
This will likely affect the sizes of the verticals in other grids
As Rod suggests. You might like to use a separate template with these grid settings, so that you can use it as needed without affecting other parts of your site.