Roda's official policy is that men above 26 handicap and women above 34 should play after 2.00pm, having said that I don't believe Roda have asked to see any handicap certificates but they need to know what it is both for insurance purposes and i believe they do try on occasions not to mix up players with very varied handicaps.
At present Roda are offering the twilight rate which is the best value after 5.00 pm but of course it can sometimes get busy then as cheapest price.
It is best if you let Roda know they are coming as they will receive a discount as your guests off the normal rate.
Try emailing email@example.com if you have further questions.
As long as they understand golf etiquette and allow players through if holding them up I don't think they should have a problem.
Best of luck