all characters are at least 18

FAQ

Q: The resolution I want to play at is not shown in the launcher. Is there anything I can do?
A: You can manually override the resolution by editing UserData/setup.xml file. However, DO NOT run the launcher afterwards (because it will be reset your values to default 1280x720) unless you messed up and need a settings reset. Run the game executable (SexyBeachPR_32.exe etc.) DIRECTLY instead. Note that if you use non-16:9 resolution, some minor glitches may occur, during cut-scenes for example.

Out of focus

Q: Is there a way to get the close up on characters not to blur out (see picture "Out of focus" on the right)?
A: It is caused by you having moved the focus point of the camera past the character (probably by "zooming" in by holding both mouse buttons). To fix it, click Reset camera or move the focus (white cross visible when moving the camera) to be at the center of the character. Click the right mouse button and move left/right to zoom instead of both mouse buttons.

Q: The game lags. Is there a way to improve performance?
A: I have an ATI R9 x280, quality 0, 1 or 2 is 10fps or less. Open Catalyst -> add SBPR to the 3D application list -> Overwrite all you can with ATI instead of allowing the 3D application to choose. The game will still be laggy, is maybe 20-26 fps and looks much better.

Q: I need more in-game money and/or mini-games points. How do I cheat?
A: Use either general cheating tools (such as Cheat Engine or ArtMoney) or edit your mainData.dat save file located in UserData\save directory using hex editor of your choice (make the backup first!). The value you're looking for is around offset 0x980. For example, new game starts with 3000, so you will see "B8 0B 00 00" byte sequence at offset 0x98A or so. If you want to have 1000000 instead, change that "B8 0B 00 00" to "40 42 0F 00". Save game is unprotected as of now, so when you load this modified save, you'll have your million for free. As for the mini-games points, they are stored 4 (null) bytes past money.

Q: How do I increase my massage skill past certain level?
A: When you open your item box (M -> items) there is a green bar there. It's your current massage experience. You have to fill that bar before you advance your level. To do so - simply initiate some H scene (there is a bench and a couple beds near Guru so you don't need to walk far). Just enter and exit the scene a couple times and your bar will be filled, then talk to Guru again to level up.

Installing the Game

Extract DISK1.mdf and DISK2.mdf (DO NOT extract the .mds file!) to e.g. C:\Downloads\SBPR
Mount C:\Downloads\SBPR\DISK1.mdf with Daemontools Lite (other mounting software has been known to fail with Japanese games, so please use Daemontools Lite - it's completely free)
DO NOT autorun, but explore the mounted dvd and right-click Startup.exe and select Run with Japanese locale as administrator (you need HF pApploc for the right-click options).
Click the second button from the top to start the Sexy Beach Premium Resort setup.
Click (N) a few times and wait while the setup installs.
About two-thirds the setup will ask for disk 2, so mount DISK2.mdf and then click OK.
To run the game, simply right-click the InitSettings.exe in the game folder (or the shortcut linked to it), select Run with Japanese locale as administrator to open the launcher and then click the ゲーム開始 button on the far left to run the game.

Extract DISK1.mdf and DISK2.mdf (DO NOT extract the .mds file!) from .rar archive(s) to e.g. C:\Downloads\SBPR
Extract the content of both .mdf files (using 7-Zip or WinRAR) to e.g. C:\Downloads\SBPR\setup, overwriting existing files. You should end up with five .cab files in there.
Start setup.exe. The locale doesn't matter in this case.
Click (N) a few times and wait while the setup installs.
Run InitSettings.exe in the game folder to change video options (resolution and picture quality) in accordance with your preferences and hardware.
Once you're satisfied with video options, you can skip the launcher and run the game or poser directly from the appropriate executable (SexyBeachPR_32.exe, SexyBeachStudio_64.exe etc.) in the game directory.