Just a suggestion, before looking at lakefront homes, I suggest taking some time to learn about the lake. You can always change the structure, but if there's a problem with the lake it could be years of frustration. If you need some assistance let me know.
Is the only time you want to view this home during an open house or would you prefer a private tour?
If you are currently under contract or obligation with a real estate professional, they can schedule a showing at any time. If you are not working with an agent, I suggest interviewing 3 or more agents and asking about Buyer Agency - where the agent is required to work for your benefit and cannot share your information.
If you need help, email me and I can recommend someone to help locally.