Jean & Wayne do not require you to contact them before visiting on the Open Access Dates, but they provide their phone number, if you feel like doing that. Refer to your annual directory for that number.
They love Highpointers and they very much enjoy our courteous visits and entertaining entries in the logbook. If you see them, feel free to wave and say hello. When I was there last, Wayne was on his riding mower and we had a nice chat.
Your concern about etiquette shows that you care and that you respect their wishes. Excellent. This is what gives Highpointers such a good reputation.
Note: As with many highpoint owners and managers, they read this forum occasionally.