Hey Scuba - glad to see other folks with expensive hobbies like us! Yes, long term travel significantly cuts down on air / transportation expenses, so snowbirding for 5 months made sense. Dive resorts usually help reduce your average cost because you are normally doing 3-4 dives a day, so you can do 20 dives in less than a week of lodging...liveaboards can be even lower, on average, with 4 to 5 dives a day and if a one way trip to destinations of interest, like the El Nido to Coron trip we did, will also save you on island to island transportation costs. However, our Raja Ampat trip wasn't cheap....average daily cost was about 300 day to do 4 amazing dives at different amazing sites a day, a luxury sailing cruise to one of the most remote places on earth and being fed 5 times a day! Australia was even more expensive when it comes to diving....did a one tank shore dive for $200 a person....no gear rental, no lodging or food!
So....how did we offset costs to travel below (if calculated with shared rental car, hotel, gas) our daily budget?
- House / pet sitting: Australia is also very expensive when it comes to lodging. Housesitting allowed us to save on lodging and car rental. We pick the right house in the right location with the right pets (a cool lab, for example, who we could take to the beach or hikes or even camping with us)
- Camping: Campervan are the way to go when visiting Australia. We could have done it cheaper by buying/selling one but we opted to rent one before and after our housesit. Fuel is expensive (sunk cost if you want to see Australia) but we saved on lodging (pretty much had ocean view accommodations in our van about 5 nites a week!) and food by cooking our meals instead of dining out (lamb and red wine was our favorite!)
- Groupon saved us about 50 percent on our Vietnam / Cambodia tour. We weren't planning to go, but couldn't resist the deal....worried it was too good to be true....it was great! (No diving though!)
- Rewards points came in handy for free flights from and to home.....free nites at Marriotts in Perth and Jakarta, for example, after our long trips and when we needed a 'real' hot shower after staying in mid-range Asian hotels with limited hot water supplies
Hope this helps!