Embarking on a journey to Greece, a land known for its stunning landscapes, vivid culture, and opulent accommodations, can be the quintessential luxury experience if strategized correctly. The siren call of luxurious Greek hotels might be strong, but without appropriate budgeting and planning, the merriment of the journey can quickly turn into a stressful financial burden. Thus, we're here to delve into the nuances of financial planning for an upscale Greek vacation, elucidating the labyrinthine process without leaving you feeling like you're trying to decode the Enigma machine.

To begin, let's start with a fundamental economic concept that underpins any form of budgeting - Opportunity Cost. It represents the alternative benefit that could have been received but was given up when making a particular choice. In this context, it implies that every euro spent on accommodation is a euro that cannot be spent on, for example, dining or sightseeing. It's crucial to strike a balance, thus ensuring you get the most bang for your buck during your Greek sojourn.

Firstly, defining the parameters of your luxury experience is essential. Every individual has a unique perception of luxury - for some, it's a penthouse suite in a five-star hotel in Athens, while for others, it's a bespoke villa in Santorini with a private pool. Understand your own definition of luxury before you start budgeting, as it will provide a benchmark for your financial planning.

Secondly, timing is paramount. In the hospitality industry, prices fluctuate based on demand, reflecting the principles of demand-supply equilibrium from Economics. High season, which falls between late June and early September in Greece, sees a surge in tourism, leading to steeper prices. Opting for the shoulder season (April, May, late September, and October) could enable you to enjoy the same luxury at a reduced cost.

Thirdly, leverage the beauty of numbers. A statistical approach, using data available from your past travels or from the wider internet community, can enable you to create a realistic budget. Consider factors like average daily rate (ADR), a popular metric in the hotel industry that calculates the average rental revenue earned for an occupied room per day. By analyzing the ADR of different luxury hotels in Greece, you can gain an insight into what to expect in terms of accommodation costs.

Moreover, location plays a pivotal role in expenditure. According to the economic theory of Spatial Disparity, developed countries often have substantial regional differences in wealth and living standards, which applies to Greece as well. Accommodation costs in the more popular islands like Mykonos and Santorini will undoubtedly be higher than in less touristy areas. If luxury at a lower price is your goal, consider visiting the less popular yet equally beautiful parts of Greece, such as Chania in Crete or Nafplio in the Peloponnese.

Lastly, remember to account for hidden costs. Things like city taxes, service charges, and cancellation fees may seem negligible individually, but cumulatively, they can have a significant impact on your budget.

To conclude, budgeting for a luxury Greek hotel experience isn't a Herculean task. By adopting strategic budgeting methods, understanding economic and statistical concepts, and utilizing them wisely can ensure you have a luxurious vacation without breaking the bank. After all, luxury should not be synonymous with profligacy, but rather an artful blend of comfort, enjoyment, and strategic planning.