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I agree that as a gesture the groom's (my) dad's idea is very romantic. However the one person not considered is groom's mother. She could either see it as romantic, or, be mortified that the father chose this holiday to do it.
The bride's parents may also feel a bit put out, yes I considerd that too.
Ultimately, whatever romantic intentions, it is a scenario where by others may feel it wasnt appropriate and a measured decision must be made to ensure harmony between all in laws and guets etc......