Disadvantages:
- Bulky. But I know of no multi-adapter, which would appreciably smaller and / or lighter.
- Blister pack: After unpacking, you have nothing to home to store all the items together.
- There is no complete list of approximately, for which country you have to use what adapter connector, only a small handful is printed on the package (I think half a dozen).
- Country code on each connector only for 1 country. It would have been nice, memorize the technical terms of connector types, as they are internationally. By which one can identify the plug namely clearly if you have determined that there usual connections for certain exotic countries.
Conclusion:
I would buy the adapter again, especially for this low price.
General tip: In many exotic countries, there is a jumble of different connector types, because there simply has been taken by various colonizers or other influencers when electric opening up of the country, what is "at home" knew.
Therefore, it is an absolute must to ask for the planned property in advance, which have the plug. If in doubt, a photo can email, but be careful: There are similar-looking connectors, which are not compatible anyway.