Caravn just unwrapped after winter

I just unwrapped the caravan after its first winter. I put everything back in and tested everything. This the first time I have done this and managed to get water everywhere after forgetting to check the plug in the cistern drain. I also noticed a slight leak under the kitchen sink. This just seemed to be a loose push-to-fit pipe, that pushed back in OK. All now seems OK, but I was wondering if there was anything else I should be looking for? We are away this weekend, so its a good chance to check it out, but is anywhere in particular that needs checked?