Just bought the outdoor plug. Happy with it but a nice after thought would be to have a 90 degree adapter as another add on option. This will work better with outdoor receptacles that have covers as well as take the stress off of the cord itself.
I bought these from Amazon to give me some options.
Katzco 3 Way Outlet Wall Tap - Right Angle Shaped Triple Prong Wall Splitter Adapter for Behind Furniture - Multi Plugin Locations on the Bottom - Green Color - UL Listed https://www.amazon.com/dp/B01BKX61EY/ref=cm_sw_r_apan_glt_fabc_7JQ1NPCNBZFDNB2DXWV3
Hosa PWA-486 NEMA 5-15R to NEMA 5-15P Right Angle Power Adaptor https://www.amazon.com/dp/B001R0RNWK/ref=cm_sw_r_apan_glt_fabc_EBZBH1FWYDH7PYVRM8NQ
Just thought this info may help.