Depends on how easy your LO takes to new environment. I brought mine for vacation on his 3rd, 6th and 7th month and each last between 4-8 days and he dealt with it perfectly. We tried fights, long coach journeys, long road trips on the road. Some vacations we travel so much that we stayed in different accommodations at different locations every night.
If you still feel unsure then a staycation might be better for a start.
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Queen bee of 2 rugrats