For submitting papers to Elsevier journals, they instruct you to prepare Latex files using the Elsarticle class. This class has huge margins (as other questions have also touched upon), to give space for reviewer comments, etc.
I have large, landscape figures which fill whole pages. Do I need to reduce the size of these figures, so that they fit within the margins, or am I ok to keep them a sensible size and assume that this will be sorted by the publisher if it is accepted at a later date?