A warning has been issued to UK holidaymakers to avoid staycation hotspots this bank holiday weekend.Thousands of visitors are expected to flock to popular holiday destinations over the next three days - despite the weather set to be a washout.Tourists are therefore being told to stay away from Devon and Cornwall as police say people flocking to the area has already led to an unprecedented strain on its resources.They are also warning people to behave and respect the local community.Tourism